Perhaps you should try some spelling variations:
filosofia e » filosofia de, filosofia del
best scale » bast scale, rest scale, burst scale
set scale » sets scale, belt scale, rest scale
study die » study deep, study direct, study daniel
literatur » literature

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: ((set scale) OR (best scale)) ((study die) OR (study d)) filosofia e literatur.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((set scale) OR (best scale)) ((study die) or (study d)) filosofia e literatur".
• Adding a wildcard symbol may retrieve word variants: ((set scale) OR (best scale)) ((study die) or (study d)) filosofia e literatur*.