Hi Jordan,
I would recommend taking a look at this Query Rules module here: Introduction to Query Rules | Hitchhikers . This community post also writes out some more specifics on how to do this for universal search specifically.
You can use the Regex criteria in a query rules to capture certain queries and then decide which action you want to apply (e.g., Add Filter or Boost Entities).
Let us know if that helps or if you need more guidance!
Best,
Melissa