Perhaps you should try some spelling variations:
de litterature » la litterature, et litterature
studies dress » studies ds, studies der
fisiologia de » fisiologia e, fisiologia della, sociologia de
studies does » studies ds, studies der, studies do
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 does) OR (studies dress)) fisiologia de litterature".
• Adding a wildcard symbol may retrieve word variants: rats gavage ((studies does) OR (studies dress)) fisiologia de litterature*.