Perhaps you should try some spelling variations:
la litterature » a literature
en litterature » et litterature, une litterature, de litterature
do fisiologia » de fisiologia, dlco fisiologia, e fisiologia
game studies » case studies
ratios game » ratios name, rating game, ratios age
studies do » studies ds, studies d, studies dn

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: "ratios game studies do fisiologia ((en litterature) OR (la litterature))".
• Adding a wildcard symbol may retrieve word variants: ratios game studies do fisiologia ((en litterature) OR (la litterature))*.