Perhaps you should try some spelling variations:
e literature » e literatur, life literature, prose literature
studium des » studium der
filosofia e » filosofia de, filosofia del
test duale » test double, test delle, test orale
studium ds » studium das, studium d, studium der

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: "test duale ((studium ds) OR (studium des)) filosofia e literature".
• Adding a wildcard symbol may retrieve word variants: test duale ((studium ds) OR (studium des)) filosofia e literature*.