Zero results for specific keywords

That’s unusual. Have you tried rebuilding the index?

Yes multiple times, and might it matter we’re using the pro version?

If you’re using Premium, then you should be contacting Premium support, since that’s what you’re paying for. That gets you answers to your questions much faster, as I only check these forums once a day, and Premium support requests come directly to my inbox and are answered many times a day – assuming your license is valid, of course.

Anyway, there’s a problem in indexing, somehow, since the word doesn’t appear in the database. If you add the word “leeds” to another post and save it, can you find that post?

You might also want to check out https://www.relevanssi.com/knowledge-base/how-to-debug-indexing-problems/

Also, if you can drop me an email through the Relevanssi Premium support (https://www.relevanssi.com/support/) with login details, I can take a look at your site to see if I can figure this out.