Perhaps you should try some spelling variations:
anthropology chavin » anthropology can, anthropology chris, anthropology chapter
anthropology alain » anthropology spain, anthropology aat, anthropology alps
anthropology david » anthropologist david, anthropology based, anthropology asia

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: (( anthropology alain ) OR ( ((anthropology chavin) OR (anthropology david)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( anthropology alain ) or ( ((anthropology chavin) OR (anthropology david)) ))".
• Adding a wildcard symbol may retrieve word variants: (( anthropology alain ) or ( ((anthropology chavin) OR (anthropology david)) ))*.