diff --git a/index.html b/index.html
index b2cd74f..8f822f2 100644
--- a/index.html
+++ b/index.html
@@ -241,13 +241,13 @@ function searchDocuments() {
     }
 
     const matches = documents.filter(doc => {
-        const titleWords = normalize(doc.title)
-            .split(/[\s\-_]+/);
+    const title = normalize(doc.title);
+    const id = normalize(doc.id);
 
-        const id = normalize(doc.id);
+    const titleWords = title.match(/[\p{L}\p{N}]+/gu) || [];
 
-        return titleWords.includes(query) || id === query;
-    });
+    return titleWords.includes(query) || id === query;
+});
 
     status.textContent =
         `${matches.length} نتیجه پیدا شد.`;