Perhaps you should try some spelling variations:
"political anthropology" » "biological anthropology", "theological anthropology", "medical anthropology"
"physical anthropology" » "medical anthropology", "philosophical anthropology"
"social anthropology" » "medical anthropology"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((((("political anthropology") OR ("physical anthropology"))) OR ("social anthropology"))) OR ("cultural anthropology")).
• Removing quotes may allow a broader search: (((((( political anthropology ) or ( physical anthropology ))) or ( social anthropology ))) or ( cultural anthropology )).
• Adding a wildcard symbol may retrieve word variants: (((((("political anthropology") or ("physical anthropology"))) or ("social anthropology"))) or ("cultural anthropology"))*.