Answer to My Request
If you check the comments on the post before this one, there were numerous suggestions, including that we may have to create our own database (which I would be amenable to over the summer…). Aravis gave the best suggestion, though.
Check out AllReaders. Its database gives many different ways to search, including by Setting. Since I was specifically checking for European books around my vacation, I was able to choose Europe as a setting, then a country within Europe.
Aravis mentioned that I might like the site and possibly get “lost” there. Over an hour later, I concluded she was right. I could/did get “lost” in the site. You can search by author or title (of course), as well as plot, setting, or character.
Thanks for all the input, friends. If you haven’t found it yet, check out:
(Thanks for the library suggestion. I’d already tried it and it wasn’t working for me. It wasn’t accepting countries as subject except as a nonfiction subject like for travel books. That wasn’t what I wanted.)