Perhaps you should try some spelling variations:
peers studien » peer studie, peer studies, plebs studien
di filosofia » la filosofia
e filosofia » la filosofia
best peers » best peer, best peere, best papers
literatur » literature

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: "best peers studien ((di filosofia) OR (e filosofia)) e literatur".
• Adding a wildcard symbol may retrieve word variants: best peers studien ((di filosofia) OR (e filosofia)) e literatur*.