Perhaps you should try some spelling variations:
duales studium » das studium
des filosofia » e filosofia, di filosofia, da filosofia
tests duales » tests dalekjs, tests des, neues duales
de filosofia » e filosofia, di filosofia, la filosofia
e literature » e literatur, life literature, prose literature

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: "tests duales studium ((des filosofia) OR (de filosofia)) e literature".
• Adding a wildcard symbol may retrieve word variants: tests duales studium ((des filosofia) OR (de filosofia)) e literature*.