I agree with you on this. I search for tech topics a lot and google offers an option to search "scholarly articles". I like that option as sometimes a tech term gets confused with something else. It would be great if there was a way to select from some check boxed, like an advanced search, "search only for semiconductor datasheets" or "search all Jazz music" or upload a picture and "identify an insect" (agree that does not work well yet) or whatever someone might be interested in.

The question is if such an approach would lure a lot of people away, I could see an entry angle might be a front end to google with an app that does that.