Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
dd filosofia » di filosofia, de filosofia, da filosofia
filosofia de » filosofia del
rust scale » trust scale, rest scale, robust scale
just scale » burst scale, must scales, trust scale
studien dd » studies dd, studien der, studien die

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: ((rust scale) OR (just scale)) studien dd filosofia de literatura.
• Adding a wildcard symbol may retrieve word variants: ((rust scale) or (just scale)) studien dd filosofia de literatura*.