Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
della studien » delphi studien, modell studien, della studiosa
cella studie » cells studies, cells studied, cell studies
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: "test ((della studien) OR (cella studie)) la filosofia la literatura".
• Adding a wildcard symbol may retrieve word variants: test ((della studien) OR (cella studie)) la filosofia la literatura*.