Perhaps you should try some spelling variations:
der filosofia » de filosofia, e filosofia, di filosofia
e literatura » de literatura, e literatur, a literatura
y literatura » la literatura
student der » studenten der, student under, student debt
best scale » rest scale, burst scale, best sales
bast scale » vast scale, basin scale, based 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: ((best scale) OR (bast scale)) student der filosofia ((e literatura) OR (y literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((best scale) or (bast scale)) student der filosofia ((e literatura) OR (y literatura))".
• Adding a wildcard symbol may retrieve word variants: ((best scale) or (bast scale)) student der filosofia ((e literatura) OR (y literatura))*.