Perhaps you should try some spelling variations:
duales studium » das studium
de filosofia » di filosofia, la filosofia, a filosofia
e literatura » de literatura, y literatura, e literatur
e filosofia » la filosofia
testo » test, tests, texto

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: "testo duales studium ((de filosofia) OR (e filosofia)) e literatura*".