Perhaps you should try some spelling variations:
sociali studies » social studies, sociale studies, societal studies
texto sociali » texto social, text social, texts social
de filosofia » di filosofia, la filosofia, a filosofia
de literatur » de literatura, de literatuur, de litterature
e filosofia » la filosofia

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: "texto sociali studies ((de filosofia) OR (e filosofia)) de literatur*".