Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
studies dose » studies ds, studies does, studies die
filologia de » filologia e, fisiologia de, filosofia de
studies do » studies ds, studies d, studies dn
rats » rate, rat, rays
gavage » savage, lavage

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "rats gavage ((studies dose) OR (studies do)) filologia de litterature".
• Adding a wildcard symbol may retrieve word variants: rats gavage ((studies dose) OR (studies do)) filologia de litterature*.