Perhaps you should try some spelling variations:
dualen studium » duales studium, duale studium
das filosofica » da filosofia, vida filosofica, la filosofia
da literatura » a literatura, de literatura, na literatura
la literatura » la litterature, a literature
test dualen » des dualen, test doubles
studium das » studium des, studium der, studium die

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 dualen studium das filosofica ((da literatura) OR (la literatura))".
• Adding a wildcard symbol may retrieve word variants: test dualen studium das filosofica ((da literatura) OR (la literatura))*.