Perhaps you should try some spelling variations:
e literatura » de literatura, y literatura, e literatur
filosofia e » filosofia de, filosofia del
test dese » test dose, test delle, test der
test des » test der, test test

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: ((test des) OR (test dese)) studie _ filosofia e literatura.
• Adding a wildcard symbol may retrieve word variants: ((test des) or (test dese)) studie _ filosofia e literatura*.