Google owns YouTube. Plus, Google isn't much better. There's a skew to their results. Plus you used to be able to get thousands of results, literally every page in existence in relation to what you searched, would be on it. Now they just filter the results they think you want. So instead of getting thousands of different results, now you just get the same copy & pasted article for 10 pages. I s/ try finding a different search engine. Remember Ask Jeeves, lol?
YouTube search result is really bad. I typed in a search, for example, 1/2 the results have to do w/ the hurriance. Nothing I typed has anything to do w/ the hurricane.
I sorted by time '1 week'. 1/2 the results are way more than a week old.
I noticed they deleted a lot of their older videos too. Unless your video is a couple years old or so, it's probably gone from the Search result. Even if the actual video is still on someone's channel, it won't show on results.