Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
scale studies » case studies, scale study
dd filosofia » di filosofia, de filosofia, la filosofia
da filosofia » la filosofia, di filosofia, a filosofia
sets scale » sets scaled, sets scales, set scale

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 scale studies ((dd filosofia) OR (da filosofia)) da literatura*".