Perhaps you should try some spelling variations:
scaled studies » scale studies, saed studies, scale studien
di filosofia » la filosofia, e filosofia
a literatura » la literatura, y literatura, a literatur
sets scaled » sets scale, sets scales, less scaled
d filosofia » de filosofia, da filosofia, e filosofia

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 scaled studies ((d filosofia) OR (di filosofia)) ((a literatura) OR (a literature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "sets scaled studies ((d filosofia) OR (di filosofia)) ((a literatura) or (a literature))".
• Adding a wildcard symbol may retrieve word variants: sets scaled studies ((d filosofia) OR (di filosofia)) ((a literatura) or (a literature))*.