Perhaps you should try some spelling variations:
en litterature » et litterature, une litterature, la litterature
di filosofia » la filosofia, e filosofia
da filosofia » la filosofia, a filosofia, de filosofia
day studium » das studium, dem studium, d studium
test day » rest day, test data, feast day

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 day studium ((da filosofia) OR (di filosofia)) en litterature".
• Adding a wildcard symbol may retrieve word variants: test day studium ((da filosofia) OR (di filosofia)) en litterature*.