Perhaps you should try some spelling variations:
state studied » have studied, state study, water studied
state studies » staff studies, site studies
a literatura » la literatura, a literature, y literatura
e filosofia » la filosofia
filosofia a » filosofia da, filosofia la, filosofia e

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "test ((state studied) OR (state studies)) e filosofia a literatura".
• Adding a wildcard symbol may retrieve word variants: test ((state studied) OR (state studies)) e filosofia a literatura*.