Perhaps you should try some spelling variations:
sets locales » retos locales, sets local, et locales
filosofica a » filosofica da, filosofica _, filosofico a
filosofica e » filosofia e, filosofica da, filosofia de
sets scales » sets scale, sets scaled, sites scales
studien die » studie die, studien der

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 scales) OR (sets locales)) studien die ((filosofica a) OR (filosofica e)) literature.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((sets scales) or (sets locales)) studien die ((filosofica a) OR (filosofica e)) literature".
• Adding a wildcard symbol may retrieve word variants: ((sets scales) or (sets locales)) studien die ((filosofica a) OR (filosofica e)) literature*.