Perhaps you should try some spelling variations:
e literatura » de literatura, y literatura, e literatur
studies der » studies ds, studies d, studies dc
filosofia e » filosofia de, filosofia del
best scale » rest scale, burst scale, best sales
bast scale » vast scale, basin scale, based scale
studies dn » studies ds, studies d

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)) ((studies der) OR (studies dn)) filosofia e literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((best scale) or (bast scale)) ((studies der) OR (studies dn)) filosofia e literatura".
• Adding a wildcard symbol may retrieve word variants: ((best scale) or (bast scale)) ((studies der) OR (studies dn)) filosofia e literatura*.