At least on OneDrive for Android, a bizarre thing is that search is _not_ equivalent to find . -iname. It is able to find search terms in the _content_ of documents but not their filenames.
find -type f -exec grep -Hn "_content_" {} \;
grep -RHn "_content_" .I just did it more tongue-in-cheek like the unneeded cat commands.
There’s definitely use cases. If you want to search for a keyword on the file name, that one’s great.