Search for hashtag with same value as the username


I don’t know if this is the right place to post this but I didn’t another place.

I’m using the Search API v1.1 and I’m trying to search user tweets with the same username like the following : “q=from:NCAA #NCAA

in the search interface I got all the results
but when using the search API v1.1 I got nothing, I also tried I got the same empty result.

Please help.