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

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: texto sociali ((studies due) OR (studies doe)) filosofia e literatura*.