Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, a literatura
texture space » feature space, future space, culture space
space studien » space studies, spaces studied, space student
e literatura » de literatura, y literatura, e literatur

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: texture space studien _ filosofia ((e literatura) OR (pela literatura)).
• Adding a wildcard symbol may retrieve word variants: texture space studien _ filosofia ((e literatura) or (pela literatura))*.