Perhaps you should try some spelling variations:
filosofica la » filosofica da, filosofia da, filosofica e
filosofia la » filosofia da, filosofia le, filosofica da
tests scale » tests stable, tests safe, tests shall
studies die » studie die, studien die, studies does
sets scale » sets scaled, sets scales, set 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: ((tests scale) OR (sets scale)) studies die ((filosofica la) OR (filosofia la)) literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests scale) or (sets scale)) studies die ((filosofica la) OR (filosofia la)) literatura".
• Adding a wildcard symbol may retrieve word variants: ((tests scale) or (sets scale)) studies die ((filosofica la) OR (filosofia la)) literatura*.