Perhaps you should try some spelling variations:
la litterature » a literature
de litterature » et litterature
game studies » case studies
d fisiologia » de fisiologia, e fisiologia, 2 fisiologia
rats game » rts game, rate game, ratios game
studies d » studies ds

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 game studies d fisiologia ((de litterature) OR (la litterature))".
• Adding a wildcard symbol may retrieve word variants: rats game studies d fisiologia ((de litterature) OR (la litterature))*.