Perhaps you should try some spelling variations:
fisiologia en » fisiologia del, fisiologia de, fisiologia 1
game studies » case studies
fisiologia e » psicologia e, fisiopatologia e, sociologia e
ratios game » ratios name, rating game, ratios age
studies doe » studies does, studies dose, studies do

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