macOS Big Sur's search doesn't find everything?

Hello.

I was searching "culture" (without quotation marks) for Office 365

v16.48's Office filenames, but macOS Big Sur v11.3.1's Finder and

Spotlight doesn't find them in a 13" 2012 Intel MacBook Pro's SSD. It

doesn't show all of the files that I see when manually listing them in

Finder's Documents.

Thank you for reading and hopefully answering soon. :)