Perhaps you should try some spelling variations:
gavage studien » gavage studies, gavage study, frage studien
filologia et » filologia e, filologica e, fisiologia e
studien die » studie die, studien der
filosofia e » filosofia de, filosofia del
rat gavage » rats gavage, oral gavage

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: "rat gavage studien die ((filologia et) OR (filosofia e)) litterature".
• Adding a wildcard symbol may retrieve word variants: rat gavage studien die ((filologia et) OR (filosofia e)) litterature*.