Thanks. This worked perfect.
But i had a little struggle on finding Library/Metadata -> it wasn't shown up in finder/alfred. For anyone else who is struggeling:
i solved it by opening Terminal.app and run the command:
open Library/Metadata
After this, finder opens in the Metadata folder and you can drag and drop the folder
com.devon-technologies.think3
into alfreds Search Scope List under
Features -> Default Results -> Search Scope