Windows search. In file contents. Is not showing any search result. [Windows 11 indexing problem.]

My entire work depends on searching for certain drawing numbers The information within the file. So I usually index all my files with file contents option enabled. So that the search would be instantaneous.

So when I'm searching for a drawing number 765-47-562. In a folder. Where a Excel file has the drawing number with the filename as F000411820.

Please help me trouble shooting the indexing in win 11