Note: You can change Entire Library to Online to see only materials available online.
Start with a keyword search. Once you find a book that's relevant to your topic, click on the title and look for the Subjects listed for that book to help you find "more like this" and explore related aspects of a broader topic.
Example: Keyword search: globali*ation AND Africa AND China
Subject terms for the books that come up in this keyword search lead you to many more books on aspects of the topic, for example:
(For tips on keyword searching, such as using the asterisk * for wildcard searching, see the Search Tips & Tutorials page of this guide.)