[throwaway87378]

> But I'd actually use Amazon.

Amazon book recommendations and keyword search are garbage. Sometimes even a direct search for title and author name will put the result halfway down the list. The two good things Amazon has going for it are the huge catalog (great for finding the right ISBN), and reviews dating back to the 1990s. Makes it easier to decide whether or not to purchase the book from a more ethical retailer.

Out of all the online bookstores, Thriftbooks has the best recommendations in my experience.

The best ways to find good books are still bibliographies and large public and university libraries - browse the shelves, ask the librarians. Online library catalogues usually beat online retailer catalogs for keyword searches.