Perhaps you should try some spelling variations:
under filosofia » de filosofia, una filosofia, aprender filosofia
student under » students under, student und, students gender
sets create » sets created, set create, sets creative
sets raise » its raise, sets racs, yes raise
sets rate » sets state, sets racs, sets ralf

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: ((sets raise) OR (((sets rate) OR (sets create)))) student under filosofia _ literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((sets raise) or (((sets rate) OR (sets create)))) student under filosofia _ literatura".
• Adding a wildcard symbol may retrieve word variants: ((sets raise) or (((sets rate) OR (sets create)))) student under filosofia _ literatura*.