Yes, RChilli Search and Match Simple search supports searching for Aliases from the profiles.
While indexing the document, we are indexing the profile and its aliases, you can check the resume weightage:- Dynamic Weightage (rchilli.com)
There will be different scoring for alias and profile. But you can change by using the Dynamic Weightage (Dynamic Weightage (rchilli.com)
Please see the below example it we are searching for IOS developer or Apple Developer it is showing the same profiles.
Searching with IOS Developer,
Searching with Apple Developer ,