Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
scale studien » scale studies, scale student, duale studien
de filosofia » e filosofia, la filosofia, a filosofia
di filosofia » la filosofia, e filosofia
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: sets scale studien ((de filosofia) OR (di filosofia)) la literatura.
• Adding a wildcard symbol may retrieve word variants: sets scale studien ((de filosofia) or (di filosofia)) la literatura*.