ebays search also used to work a lot better to come up with things that actually matched what you were looking for. Now the people selling that chinese crap are making multiple listings so they can be more specific with their titles to force their way into searches better. But there's still a lot more on there then you can find in other places.

One thing you can do is exclude the listers(name) from the search results. This helps but there are more than one and it becomes a time consuming process. Ebay needs to do something about it. Maybe if enough people complain in the "tell us what you think" link they will do something.
https://connect.ebay.com/srv/survey/a/search.srp.node

I have been complaining to ebay and I think they've become too big and too profitable to give a crap anymore

Do you think that they're going to take anybody's advice to make less money? Not likely.