Perhaps you should try some spelling variations:
duale studien » duale studium, duales studium, dualen studium
scale studien » scale studies, soziale studien, scale study
scale student » late student, scale study, scale studies
die filosofia » di filosofia, de filosofia, e filosofia
y literatura » la literatura
filosofia y » filosofia e, filosofia _, filosofia de
testo » test, tests, texto

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: testo ((duale studien) OR (((scale studien) OR (scale student)))) die filosofia y literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "testo ((duale studien) or (((scale studien) OR (scale student)))) die filosofia y literatura".
• Adding a wildcard symbol may retrieve word variants: testo ((duale studien) or (((scale studien) OR (scale student)))) die filosofia y literatura*.