Perhaps you should try some spelling variations:
scales studies » scale studies, cases studies, shapes studies
scale studien » scale studies, scale student, soziale studien
duale studien » duale studium, duales studium, dualen studium
dd filosofia » di filosofia, de filosofia, da filosofia
e literatura » de literatura, y literatura, e literatur
filosofia e » filosofia de, filosofia del

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 ((scales studies) OR (((scale studien) OR (duale studien)))) dd filosofia e literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "sets ((scales studies) or (((scale studien) OR (duale studien)))) dd filosofia e literatura".
• Adding a wildcard symbol may retrieve word variants: sets ((scales studies) or (((scale studien) OR (duale studien)))) dd filosofia e literatura*.