Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, da literatura
texts space » text space, tests space, meets space
studio des » studio del, studio dei, studio de
studio der » studio oder, studio del, studio dei

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: texts space ((studio des) OR (studio der)) filosofia del literatura.
• Adding a wildcard symbol may retrieve word variants: texts space ((studio des) or (studio der)) filosofia del literatura*.