Perhaps you should try some spelling variations:
modell studien » model studies, models studies, moderne studien
la litterature » a literature
della studien » cella studie, delphi studien, della studiosa
di filosofia » la filosofia, e filosofia
filosofia la » filosofia da, filosofia le, filosofica da

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: "testa ((della studien) OR (modell studien)) di filosofia la litterature".
• Adding a wildcard symbol may retrieve word variants: testa ((della studien) OR (modell studien)) di filosofia la litterature*.