Perhaps you should try some spelling variations:
da literature » a literature, da literatura, la literature
scale studio » scale studies, scale studien, scale study
de filosofia » di filosofia, la filosofia, a filosofia
tests scale » tests stable, sets scale, tests safe
e filosofia » la filosofia

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 studio ((de filosofia) OR (e filosofia)) da literature.
• Adding a wildcard symbol may retrieve word variants: tests scale studio ((de filosofia) or (e filosofia)) da literature*.