diff --git a/src/components/Navigations/PathNode.js b/src/components/Navigations/PathNode.js
index 7b06993..6586020 100644
--- a/src/components/Navigations/PathNode.js
+++ b/src/components/Navigations/PathNode.js
@@ -2,7 +2,7 @@ import React, {useState} from "react";
 import { Link } from "react-router-dom";
 import PermissionGuard from "../PermissionGuard";
 import "./PathNode.css";
-import {useDeletePath, useMovePath, usePaths, useUpdatePath} from "../../utils/path-queries";
+import {useDeletePath, useMovePath, usePath, usePaths, useUpdatePath} from "../../utils/path-queries";
 import {useIndexMarkdown, useMarkdownsByPath, useMoveMarkdown} from "../../utils/markdown-queries";
 import MarkdownNode from "./MarkdownNode";
 
@@ -11,8 +11,8 @@ const PathNode = ({ path, isRoot = false }) => {
     const [isEditing, setIsEditing] = useState(false);
     const [newName, setNewName] = useState(path.name);
 
-    const { data: childPaths, isLoading: isChildLoading, error: childError } = usePaths(path.id);
-    const { data: markdowns, isLoading: isMarkdownLoading, error: markdownError } = useMarkdownsByPath(path.id);
+//    const { data: childPaths, isLoading: isChildLoading, error: childError } = usePaths(path.id);
+//    const { data: markdowns, isLoading: isMarkdownLoading, error: markdownError } = useMarkdownsByPath(path.id);
     const deletePath = useDeletePath();
     const updatePath = useUpdatePath();
 
@@ -60,18 +60,40 @@ const PathNode = ({ path, isRoot = false }) => {
         })
     };
 
+    const childPaths = path.children.filter(x => x.type==="path");
     const sortedPaths = childPaths
         ? childPaths.slice().sort((a, b) => a.order.localeCompare(b.order))
         : [];
 
+    const markdowns = path.children.filter(x => x.type==="markdown");
     const sortedMarkdowns = markdowns
         ? markdowns.filter(md => md.title !== "index").sort((a, b) => a.order.localeCompare(b.order))
         : [];
 
-    if(childError || markdownError){
+/*    if(childError || markdownError){
         return <li>Error...</li>;
-    }
+    }*/
 
+    if(isRoot)
+        return (
+            <ul className="menu-list">
+                {sortedPaths.map((path) => (
+                    <PathNode
+                        key={path.id}
+                        path={path}
+                        isRoot={false}
+                        onSave={handleSave}
+                        onDelete={handleDelete}
+                    />
+                ))}
+                {sortedMarkdowns.filter(md => md.title !== "index").map((markdown) => (
+                    <MarkdownNode
+                        markdown={markdown}
+                        handleMoveMarkdown={handleMoveMarkdown}
+                    />
+                ))}
+            </ul>
+        );
     return (
         <li>
             <div className="path-node-header field has-addons">
@@ -167,7 +189,6 @@ const PathNode = ({ path, isRoot = false }) => {
 
             {isExpanded && (
                 <ul>
-                    {isChildLoading && <p>Loading...</p>}
                     {sortedPaths.map((child) => (
                         <PathNode
                             key={child.id}
diff --git a/src/components/Navigations/SideNavigation.js b/src/components/Navigations/SideNavigation.js
index 693cd30..85f84c0 100644
--- a/src/components/Navigations/SideNavigation.js
+++ b/src/components/Navigations/SideNavigation.js
@@ -3,23 +3,15 @@ import PathNode from "./PathNode";
 import "./SideNavigation.css";
 import {useDeletePath, usePaths, useUpdatePath} from "../../utils/path-queries";
 import React from 'react';
-import {useSearchMarkdown} from "../../utils/markdown-queries";
-import MarkdownNode from "./MarkdownNode";
+import {useTree} from "../../utils/tree-queries";
 
 const SideNavigation = () => {
-    const {data: paths, isLoading, error } = usePaths(1);
+    const {data: tree, isLoading, error} = useTree();
     const deletePath = useDeletePath();
     const updatePath = useUpdatePath();
     const [searchTerm, setSearchTerm] = React.useState("");
     const [keyword, setKeyword] = React.useState("");
     const [searchMode, setSearchMode] = React.useState(false);
-
-    const {data: searchResults, isLoading: isSearching} = useSearchMarkdown(keyword, {
-        enabled: searchMode && !!searchMode,
-    });
-    const sortedPaths = paths
-        ? paths.slice().sort((a, b) => a.order.localeCompare(b.order))
-        : [];
     const handleDelete = (id) => {
         if (window.confirm("Are you sure you want to delete this path?")){
             deletePath.mutate(id, {
@@ -30,13 +22,30 @@ const SideNavigation = () => {
         }
     };
 
-    const handleSearch = () => {
-        setSearchMode(true);
-        setKeyword(searchTerm);
-    }
-    const exitSearch = () => {
-        setSearchMode(false);
-    }
+
+    const filterTree = (t, k) => {
+        if(t === undefined)
+            return undefined;
+        if (t.type === "path") {
+            if (t.name.includes(k)) {
+                return { ...t };
+            }
+            const filteredChildren = (t.children || [])
+                .map(c => filterTree(c, k))
+                .filter(Boolean);
+
+            if (filteredChildren.length > 0) {
+                return { ...t, children: filteredChildren };
+            }
+        } else if (t.type === "markdown") {
+            if (t.title.includes(k)) {
+                return { ...t };
+            }
+        }
+        return undefined;
+    };
+
+    const filteredTree = filterTree(tree, keyword);
 
     const handleSave = (id, newName) => {
         updatePath.mutate({ id, data: {name: newName }} , {
@@ -45,55 +54,17 @@ const SideNavigation = () => {
             }
         });
     };
-    if(!searchMode && isLoading){
-        return <aside className="menu"><p>Loading...</p></aside>;
-    }
-    if(searchMode && isSearching){
-        return <aside className="menu"><p>Loading...</p></aside>;
-    }
-    if(error){
-        return <aside className="menu"><p>Error...</p></aside>;
-    }
-
-
+    if (isLoading) return <aside className="menu"><p>Loading...</p></aside>;
+    if (error) return <aside className="menu"><p>Error loading tree</p></aside>;
     return (
         <aside className="menu">
-            <div className="field has-addons mb-2">
-                <div className="control is-expanded">
-                    <input
-                        className="input is-small"
-                        type="text"
-                        placeholder="Search..."
-                        value={searchTerm}
-                        onChange={(e) => setSearchTerm(e.target.value)}
-                    />
-                </div>
-                <div className="control">
-                    <button
-                        className="button is-small is-info"
-                        onClick={handleSearch}
-                        disabled={!searchTerm.trim()}
-                        type="button"
-                    >
-                        <span className="icon">
-                            <i className="fa fa-search"></i>
-                        </span>
-                    </button>
-                </div>
-
-                {searchMode && (
-                    <div className="control">
-                        <button
-                            className="button is-small is-danger"
-                            onClick={exitSearch}
-                            type="button"
-                        >
-                            <span className="icon">
-                                <i className={"fa fa-window-close"}></i>
-                            </span>
-                        </button>
-                    </div>
-                )}
+            <div className="control is-expanded">
+                <input
+                    className="input is-small"
+                    type="text"
+                    placeholder="Search..."
+                    onChange={(e) => setKeyword(e.target.value)}
+                />
             </div>
             <PermissionGuard rolesRequired={["admin", "creator"]}>
                 <a
@@ -103,29 +74,17 @@ const SideNavigation = () => {
                     Create New Markdown
                 </a>
             </PermissionGuard>
-            {searchMode ? (
-                <ul>
-                    {searchResults.map((markdown, i) => (
-                        <MarkdownNode
-                            markdown={markdown}
-                            handleMoveMarkdown={() => {}}
-                        />
-                    ))}
-                </ul>
-            ) : (
-                <ul className="menu-list">
-                    {isLoading && <p>Loading...</p>}
-                    {sortedPaths.map((path) => (
-                        <PathNode
-                            key={path.id}
-                            path={path}
-                            isRoot={false}
-                            onSave={handleSave}
-                            onDelete={handleDelete}
-                        />
-                    ))}
-                </ul>
-            )}
+            {!filteredTree || filteredTree.length === 0 ?
+                <p>No Result</p> :
+                <PathNode
+                    key={1}
+                    path={filteredTree}
+                    isRoot={true}
+                    onSave={handleSave}
+                    onDelete={handleDelete}
+                />
+            }
+
 
         </aside>
     );
diff --git a/src/utils/path-queries.js b/src/utils/path-queries.js
index 512d35f..b0b4ecd 100644
--- a/src/utils/path-queries.js
+++ b/src/utils/path-queries.js
@@ -55,6 +55,7 @@ export const useCreatePath = () => {
             onSuccess: (res, variables) => {
                 console.log(JSON.stringify(variables));
                 queryClient.invalidateQueries(["paths", variables.parent_id]);
+                queryClient.invalidateQueries("tree");
             },
         }
     );
@@ -73,6 +74,7 @@ export const useUpdatePath = () => {
             onSuccess: (res, variables) => {
                 queryClient.invalidateQueries(["paths", res.parent_id]);
                 queryClient.invalidateQueries(["path", variables.data.id]);
+                queryClient.invalidateQueries("tree");
             },
         }
     );
@@ -89,6 +91,7 @@ export const useDeletePath = () => {
         {
             onSuccess: () => {
                 queryClient.invalidateQueries("paths");
+                queryClient.invalidateQueries("tree");
             },
         }
     );
@@ -107,6 +110,7 @@ export const useMovePath = () => {
         {
             onSuccess: () => {
                 queryClient.invalidateQueries("paths");
+                queryClient.invalidateQueries("tree");
             }
         }
     );
diff --git a/src/utils/tree-queries.js b/src/utils/tree-queries.js
new file mode 100644
index 0000000..67fbdf4
--- /dev/null
+++ b/src/utils/tree-queries.js
@@ -0,0 +1,19 @@
+import {useQuery, useMutation, useQueryClient} from "react-query";
+import {fetch_} from "./request-utils";
+import {useConfig} from "../ConfigProvider";
+
+
+export const useTree = () => {
+    const queryClient = useQueryClient();
+    const config = useConfig();
+    return useQuery(
+        "tree",
+        () => fetch_(`${config.BACKEND_HOST}/api/tree/`),
+        {
+            onSuccess: data => {
+                if(data)
+                    queryClient.setQueryData("tree", data);
+            }
+        }
+    );
+}
\ No newline at end of file