Sadly giving a search engine too many words can stop it from even searching, probably because that would cause a scan or result in a very time and computer/resource intensive search. So it doesn't even bother searching and tells you it couldn't find anything.
Imagine this use case. User searches for a video that costs Youtube royalty fees and is not monetized. Do you prioritize that in your return results or some other video that makes your business money instead of costing it?
Same thing with the Spotify Company playlists and recommendations versus user generated ones. Spotify's seems to include lesser quality, lower royalty songs now even though that is not what I want and it knows it. But unlike Google, I only go to Spotify BECAUSE of the quality of the songs it recommends me. Now that it's priority is first lower royalty songs over songs it things I would like the most I have no incentive to stay.
I think technology has shifted from giving me what I want to telling me what I want. I really dislike it.