Perhaps you should try some spelling variations:
life literature » polite literature, prose literature
filosofia life » filosofia le, filosofia de, filosofia e
studien der » studie der, studenten der
test delle » testi delle, tesi delle, test della
studien de » studien die, studien des, studien dd

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 delle ((studien de) OR (studien der)) filosofia life literature*.