Perhaps you should try some spelling variations:
space studien » spaces studied, space student, space station
space studies » peace studies, surface studies, case studies
le literatura » la literatura, de literatura, e literatura
di filosofia » la filosofia, e filosofia
filosofia le » filosofia de, filosofia e, filosofia del

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "texts ((space studien) OR (space studies)) di filosofia le literatura".
• Adding a wildcard symbol may retrieve word variants: texts ((space studien) OR (space studies)) di filosofia le literatura*.