Perhaps you should try some spelling variations:
le literatura » la literatura, de literatura, e literatura
filosofia le » filosofia de, filosofia e, filosofia del
tests space » test space, texts space, lists space
tests scale » tests stable, sets scale, tests safe
study la » study law, study lay, study lca

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: ((tests space) OR (tests scale)) study la filosofia le literatura.
• Adding a wildcard symbol may retrieve word variants: ((tests space) or (tests scale)) study la filosofia le literatura*.