Perhaps you should try some spelling variations:
scale student » late student, scale study, male students
scale studies » scale study
di literatura » de literatura, da literatura, ii literatura
case studies » case study
de filosofia » e filosofia, di filosofia, la filosofia
filosofia di » filosofia de, filosofia da, filosofia del

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: sets ((scale student) OR (((scale studies) OR (case studies)))) de filosofia di literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "sets ((scale student) or (((scale studies) OR (case studies)))) de filosofia di literatura".
• Adding a wildcard symbol may retrieve word variants: sets ((scale student) or (((scale studies) OR (case studies)))) de filosofia di literatura*.