Perhaps you should try some spelling variations:
da literatura » a literatura, de literatura, na literatura
la literatura » la litterature, a literature
da filosofia » la filosofia, di filosofia, a filosofia
studium da » studium das, studium a, studium d
test dem » test des, test de, nebst dem

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