Perhaps you should try some spelling variations:
3 filosofiche » e filosofiche, ve filosoficke, e filosofica
filosofiche y » filosofiche e, filosofiche lo, filosofia y
y literatura » la literatura
studenten 3 » studenten _, studenten 5, studenten 4
test eines » test eine, test einer, testen eines
test ones » best ones, tested ones, test lines
test one » least one, yeast one, just one

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: ((((test ones) OR (test eines))) OR (test one)) studenten 3 filosofiche y literatura*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((test ones) OR (test eines))) or (test one)) studenten 3 filosofiche y literatura*".