Perhaps you should try some spelling variations:
filosofica da » filosofia da, filosofia de, filosofia di
filosofia la » filosofia da, filosofia le, filosofia das
studium das » studium des, studium der, studium die
test dem » test der, test de, nebst dem
test des » test der, test test

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 dem) OR (test des)) studium das ((filosofia la) OR (filosofica da)) literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((test dem) or (test des)) studium das ((filosofia la) OR (filosofica da)) literatura".
• Adding a wildcard symbol may retrieve word variants: ((test dem) or (test des)) studium das ((filosofia la) OR (filosofica da)) literatura*.