A Google Web Search Help thread has complaints from the academia market that Google Scholar has removed a useful feature under the advanced search area. You can now no longer search or filter by discipline when using Google Scholar.
I should point out, the about Scholar page still says you can. It reads “you can search across many disciplines and sources.”
Google’s Kousha said don’t expect it to return any time soon. He wrote:
Here is the old advanced search for Google Scholar:
Here is the new one:
Forum discussion at Google Web Search Help.