Perhaps you should try some spelling variations:
y literatura » la literatura
studium das » studium des, studium der, studium als
studium die » studium der, studium des
filosofia y » filosofia e, filosofia _, filosofia de
test duale » test double, test delle, test orale

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 das) OR (studium die)) filosofia y literatura".
• Adding a wildcard symbol may retrieve word variants: test duale ((studium das) OR (studium die)) filosofia y literatura*.