Perhaps you should try some spelling variations:
texto sociali » texto social, text social, texts social
e literatura » de literatura, y literatura, e literatur
studies doe » studies does, studies dose, studies do
filosofia e » filosofia de, filosofia del
studies de » studies der, studies die, studies due

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) OR (studies doe)) filosofia e literatura*".