Perhaps you should try some spelling variations:
does filologia » de filologia, e filologia
et litterature » la litterature, art literature
tests gavage » rats gavage, tests page
tests damage » pests damage, test damage, costs damage
di filologia » di filosofia

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: ((tests gavage) OR (tests damage)) studies ((does filologia) OR (di filologia)) et litterature.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tests gavage) OR (tests damage)) studies ((does filologia) or (di filologia)) et litterature".
• Adding a wildcard symbol may retrieve word variants: ((tests gavage) OR (tests damage)) studies ((does filologia) or (di filologia)) et litterature*.