Perhaps you should try some spelling variations:
filosofia la » filosofia da, filosofica da, filosofia das
filosofia le » filosofia de, filosofia e, filosofia del
testi della » test della, testa della, testi delle
studien am » studien aus, studien auf, studien _
studien a » studien _, studien 3, studien 4

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: testi della ((studien a) OR (studien am)) ((filosofia la) OR (filosofia le)) literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "testi della ((studien a) OR (studien am)) ((filosofia la) or (filosofia le)) literatura".
• Adding a wildcard symbol may retrieve word variants: testi della ((studien a) OR (studien am)) ((filosofia la) or (filosofia le)) literatura*.