Perhaps you should try some spelling variations:
filosofia le » filosofia de, filosofia del, filosofia da
studien die » studie die, studien der
filosofia e » filosofia de, filosofia del
sets scale » sets scaled, sets scales, sets stable
set scale » belt scale, best scale, rest scale

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