Lots of folks searching for sports cards seem to be having an issue, particularly using the 6.168.0.2 version of the eBay app.
Possibly this is an iOS issue only? The Android 6.168.0.1 version of the app seems to be producing reasonable search results for me, and searching using a mobile browser works as well.
You should be able to report app issues on your phone by shaking the device while the app is active.
Try using a different sort if you are using "Best Match". Try narrowing the results to one category. Try putting one of your search keywords in quotes. Try searching using a browser instead of the app.
Or try searching using a desktop browser or another device to search for sports cards.
At least one user reported getting better results in the app after using the "Clear recent searches" link at the bottom of the search history reached by tapping the magnifying glass in the search bar and scrolling down.
