I didn't know that one, since I use Google search without JavaScript enabled.
Show me how to do that search qualification ahead of time, e.g. from the Firefox search box, and not as a post processing step after a search is completed. Or how to do that without JavaScript enabled. That kind of thing was easily possible before.
A long time ago I bought a book called Google Hacks[1]. It had all sorts of good tips on how to search better. E.g there were Perl and Python scripts to interface with Google. Now, running scripts like that will probably get your IP address banned (I don't know for sure, I haven't tried lately).
My point remains, Google used to be easy to use for advanced searches, without JavaScript. Not any more. There's a lot missing now.
[1] https://en.wikipedia.org/wiki/Google_Hacks