Perhaps you should try some spelling variations:
modell studien » model studies, models studies, moderne studien
modern studies » model studies, modeling studies, modelling studies
le literatura » la literatura, de literatura, e literatura
filosofia le » filosofia de, filosofia e, filosofia del

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 ((modell studien) OR (modern studies)) _ filosofia le literatura.
• Adding a wildcard symbol may retrieve word variants: test ((modell studien) or (modern studies)) _ filosofia le literatura*.