The Caves of Steel; I, Robot (+...)
Actually, you blocked me when you took the two three-word titles; the rest of the related titles don't seem to fit. The above is a lame save that I had to Google for inspiration.
Kinda suggests that a way to rank the attempts is by the strength and consistenty of the selections. Anybody can throw together six words, but the art is in their relevancy, and if multipart, whether the parts are strongly related. On that basis, you won. My two random titles come from two separate eras in Asimov's timeline, yours are part of the same set.