Perhaps you should try some spelling variations:
de literatura » de litterature, la literatura, y literatura
di filosofia » la filosofia, e filosofia
filosofia de » filosofia del
site study » sites study, sited study, situ study
study di » study die, study d, study d3
yeasts » yeast, beasts

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: (yeasts OR feasts) site study di filosofia de literatura.
• Adding a wildcard symbol may retrieve word variants: (yeasts or feasts) site study di filosofia de literatura*.