According to Microsoft support, sometimes the Start menu search displays only the category headings of the categorized search results are displayed, such as Programs, Control Panel, and Documents. To fix the problem, you can either opt for manual or automatic fix method.

How to fix it manually:

1. Type regedit in Start menu search box and hit enter to launch Windows Registry Editor. Or, type regedit in Run dialog box (use Windows + R to launch Run) and hit enter to open the same.

2. Navigate to the following registry key:

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\
FolderTypes\{ef87b4cb-f2ce-4785-8658-4ca6c63e38c6}

3. Right-click on this sub key, and then select Delete.

4. Reboot your machine to fix the problem.

5. Done!

How to fix it automatically:

1. Download the hotfix from Microsoft.

2. Install the hotfix and then reboot your machine.