Perhaps you should try some spelling variations:
de lite'rature » de litterature, de literatura, e literature
de literature » de litterature, de literatura, e literature
a filosofia » la filosofia, e filosofia, di filosofia
site study » sites study, sited study, situ study
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 a filosofia ((de literature) OR (de lite'rature)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(yeasts or feasts) site study a filosofia ((de literature) OR (de lite'rature))".
• Adding a wildcard symbol may retrieve word variants: (yeasts or feasts) site study a filosofia ((de literature) OR (de lite'rature))*.