Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
duale studium » duales studium, dualen studium, das studium
di filosofia » la filosofia, e filosofia
tests duale » tests due, tests scale, tests damage
d filosofia » de filosofia, da filosofia, e filosofia

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 duale studium ((d filosofia) OR (di filosofia)) le literatura*".