Perhaps you should try some spelling variations:
studies diet » studies die, studies der, studies does
y literatura » la literatura
filosofia y » filosofia e, filosofia _, filosofia de
studies di » studies die, studies div, studies ds
los male » los males, loss male, los mal

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: los male ((studies di) OR (studies diet)) filosofia y literatura*.