Perhaps you should try some spelling variations:
life literature » polite literature, prose literature
filosofia life » filosofia le, filosofia de, filosofia e
modell studien » model studies, models studies, moderne studien
delle studien » duale studien, delphi studien, welche studien
e filosofia » la filosofia

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) OR (modell studien)) e filosofia life literature*.