Perhaps you should try some spelling variations:
duales studium » das studium
die filosofia » di filosofia, e filosofia, da filosofia
de filosofia » e filosofia, di filosofia, la filosofia
y literatura » la literatura
test duales » test doubles, test rules, test dummies

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: test duales studium ((die filosofia) OR (de filosofia)) y literatura.
• Adding a wildcard symbol may retrieve word variants: test duales studium ((die filosofia) or (de filosofia)) y literatura*.