Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
studium la » studium a, studium als, studium das
test des » test der, test test
test de » test der, est de

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: "((test de) OR (test des)) studium la filosofia la literatura".
• Adding a wildcard symbol may retrieve word variants: ((test de) OR (test des)) studium la filosofia la literatura*.