How do I get google to re-index my facebook groups page? It disappeared from google search results.

So run a hobby club in my city. The problem was that when you'd google <hobby> <town>, my club's facebook group would appear 3rd in the results after two older but no longer existing clubs, and would appear in google's search results in a way that didn't make it clear what the group was for. So I messed with the club description, and now my facebook group has disappeared from the google search results entirely.