Perhaps you should try some spelling variations:
e literatura » de literatura, y literatura, e literatur
test double » test doubles
filosofia e » filosofia de, filosofia del
test duale » test delle, test orale, test doubles
studium ii » studium i, studium die, studium mit
studium im » studium die, studium _, studium 1

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 duale) OR (test double)) ((studium ii) OR (studium im)) filosofia e literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((test duale) OR (test double)) ((studium ii) or (studium im)) filosofia e literatura".
• Adding a wildcard symbol may retrieve word variants: ((test duale) OR (test double)) ((studium ii) or (studium im)) filosofia e literatura*.