Perhaps you should try some spelling variations:
duale studie » duale studien, duale studium, duales studium
filosofia la » filosofia da, filosofica da, filosofia das
filosofia le » filosofia de, filosofia e, filosofia del
studie die » studie der
testo » test, tests, texto

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: testo duale studie die ((filosofia la) OR (filosofia le)) literatura.
• Adding a wildcard symbol may retrieve word variants: testo duale studie die ((filosofia la) or (filosofia le)) literatura*.