While the system will initially return all those items that contain any trace of the word "culture," it will also recognize the broadness of such searchs and offer suggestions to refine or rephrase your search. These are the following options for the search "culture" that you have. These options are located directly on the search results page on the right hand side.
You can search those 526 titles for more specific categories.
Or you can select and entirely new search from a list of suggestion that might fit your topic more closely.
These tools are extremely useful because they reflect the language the database uses to organize information. These are what we call subject terms.