Perhaps you should try some spelling variations:
based studien » based studies, basedow studien, band studien
based student » based study, based studies
filosofica da » filosofia da, filosofia de, filosofia di
da literatura » la literatura, a literatura, de literatura
e filosofica » e filosofia, e filosofiche, a filosofia

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: "sets ((based studien) OR (based student)) e filosofica da literatura".
• Adding a wildcard symbol may retrieve word variants: sets ((based studien) OR (based student)) e filosofica da literatura*.