Unfortunately searching under the author's profile just finds text that matches within the author's hubs. I tried a word that I knew was in the TAGS of several hubs, but only got in my results the one hub where that word was actually in the body of a text capsule.
I know you can search by categories from the Hubs tab at the top of every page. I am wanting to do a search of tags. Different from categories and text of Hubs. I am guessing that it is not possible?