Perhaps you should try some spelling variations:
vida filosofica » da filosofia, fija filosofia, forma filosofica
dualen studium » duales studium, duale studium
das filosofica » da filosofia, la filosofia, di filosofia
da literatura » la literatura, a literatura, de literatura
test dualen » des dualen, test doubles

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