Perhaps you should try some spelling variations:
oder studium » dem studium, fur studium, das studium
di filosofia » e filosofia
e literature » e literatur, life literature, prose literature
test oder » test order, test der, fest oder

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 oder studium ((di filosofia) OR (la filosofia)) e literature.
• Adding a wildcard symbol may retrieve word variants: test oder studium ((di filosofia) or (la filosofia)) e literature*.