Perhaps you should try some spelling variations:
e literatura » de literatura, y literatura, e literatur
based scale » based scene, based sales, based scalable
studies der » studies ds, studies d, studies dc
filosofia e » filosofia de, filosofia del
best scale » bast scale, rest scale, burst 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 (based scale)) ((studies der) OR (studies dn)) filosofia e literatura.
• Adding a wildcard symbol may retrieve word variants: ((best scale) or (based scale)) ((studies der) or (studies dn)) filosofia e literatura*.