Perhaps you should try some spelling variations:
texto social » text social, texts social, texas 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: texto social ((studies de) OR (studies doe)) filosofia e literatura*.