Sonar Search engine doesn't works until you have at least 3 letters. So it is not possible to associate a project with 2 letters.
As a workaround we could implement this behavior:
- when input is 1 or 2 letters long we could search a project with exact name (using resources service)
- when input is at least 3 letters long then we use Sonar search engine to provide list of potential matches (current behavior)