Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
ds filosofia » di filosofia, de filosofia, da filosofia
filosofia la » filosofia da, filosofia le, filosofica da
sets scales » sets scaled, sets locales, sites scales
sets scale » sets scaled, 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 scales)) studies ds filosofia la literatura.
• Adding a wildcard symbol may retrieve word variants: ((sets scale) or (sets scales)) studies ds filosofia la literatura*.