Perhaps you should try some spelling variations:
de filosofia » di filosofia, la filosofia, a filosofia
sets scaled » sets scales, less scaled, sets khaled
e filosofia » la filosofia
sets scale » sets scales, set scale, sets stable

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) OR (sets scaled)) studien ((de filosofia) OR (e filosofia)) _ literature.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((sets scale) OR (sets scaled)) studien ((de filosofia) or (e filosofia)) _ literature".
• Adding a wildcard symbol may retrieve word variants: ((sets scale) OR (sets scaled)) studien ((de filosofia) or (e filosofia)) _ literature*.