Perhaps you should try some spelling variations:
die filosofica » di filosofia, de filosofia, e filosofica
filosofica la » filosofica da, filosofia la, filosofia da
la literatura » la litterature, a literature
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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests scale) OR (sets scale)) studies die filosofica la literatura".
• Adding a wildcard symbol may retrieve word variants: ((tests scale) OR (sets scale)) studies die filosofica la literatura*.