I noticed this too and it's gotten horrible. The issue is with the sellers. In the portion of the listing where ebay asks for details about the item being sold, these sellers will use the fields meant to show part numbers and such to list hundreds or thousands of "key words" so that their listing will show up no matter what someone searches for. For example, I have a saved search for "1967 Coronet hood trim". This morning a link to this listing was in my inbox:

https://www.ebay.com/itm/225996475585?itmmeta=01HQG1VPJAC826ZD7AGC0WWH78&hash=item349e708cc1:g:WAcAAOSwfp5lxtKc&itmprp=enc%3AAQAIAAAA8NJ0PdQNw7aYnhNUPWtOX%2FpzBbFZVNTEa0K1AyiB%2FIHune9Z1oQD%2FDfOcPhLrlnw0QxljDnD528tUdkV9ZZX%2FqAWXH55hBg0t%2FW7nPW2jPXxXlKfqwO%2B2qlzF87B9Ygqhyo3h286Kdur75tPt1dCRzdSHmFi8FfYObdidpkSOQlxPdYz%2BfOIjqcGH31HxQ3QZC%2BCg72GA8PUk6v4i%2FBPkS6naZson0Nd%2FboJQj3SoGBPiSzb3LFLRNIw9dJ%2BN2zwamAks3Swg87r46XyUnbdPHJ9trgGDm7UXsxBDacJ6M%2BB0roDXwdPR7%2FqvcTgNnQsdg%3D%3D%7Ctkp%3ABFBMoOnugbxj

Sorry if this shows up as something that needs to be copied/pasted and not a link. It is a car club plaque. It is listed in "auto parts and accessories" and if you scroll down to look at the "part number" there are hundreds if not thousands of "key words" and terms that have absolutely nothing to do with the item. This is one of the reasons I stopped using ebay, and until they do something about it, it's only going to get worse.