Perhaps you should try some spelling variations:
filosofica y » filosofia y, filosofica e, filosofica _
y literatura » la literatura
tests space » texts space, lists space, meets space
test space » cost space, dust space, fast space
studied e » studied 3, studied 5, studied 1

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 (test space)) ((studied e) OR (studied _)) filosofica y literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests space) or (test space)) ((studied e) OR (studied _)) filosofica y literatura".
• Adding a wildcard symbol may retrieve word variants: ((tests space) or (test space)) ((studied e) OR (studied _)) filosofica y literatura*.