Today I learned. Thank you!

Thanks! Would be nice to be able to search across communities across the Threadiverse but this is pretty good.

The key difference is that if your instance doesn't know about it, you won't see it. You need a way to find new communities, whuch is where Lemmyverse.net comes in. Apparently you can change the setting to Piefed or Mbin so it's there, I was just hoping for a single search across everything.