Perhaps you should try some spelling variations:
models studies » model studies, modern studies, modeling studies
le literatura » la literatura, e literatura, de litteratura
de literatura » de litterature, la literatura, y literatura
rosi models » roi models, rosi modell, osi model
studies la » studies lab, studies lca, studies lia

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

• If you are trying to use Boolean operators, they must be ALL CAPS: rosi models studies la filosofia ((le literatura) OR (de literatura)).
• Adding a wildcard symbol may retrieve word variants: rosi models studies la filosofia ((le literatura) or (de literatura))*.