Display requires a lot of blacklisting (or whitelisting) to get it running properly. If you transitioned from a smart campaign, you might be better off at creating a regular search campaign from scratch to avoid carrying over unwanted settings.

Review your keyword list. If your keywords aren’t too broad, they should not match with things like “university of oregon”. You should not need 1000 negative keywords to negativize these things. Just negativize concepts as phrase match “university” or “oregon” instead of hundreds of specific search terms.

The “did you mean” function is unfortunately out of your control, but if the search term is changed to “university of oregon”, your ad shouldn’t appear if your keyword is something like “UO game” or “Ultima online outlands”. Close matches can complicate this, but that’s were proper negativization comes in.

What keywords are you using?