Perhaps you should try some spelling variations:
le literatura » la literatura, e literatura, de litteratura
de literatura » de litterature, la literatura, y literatura
rosi models » roi models, rosi modell, osi modell
e filosofia » la filosofia
osi model » ii model

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) OR (osi model)) studies e filosofia ((le literatura) OR (de literatura)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((rosi models) OR (osi model)) studies e filosofia ((le literatura) or (de literatura))".
• Adding a wildcard symbol may retrieve word variants: ((rosi models) OR (osi model)) studies e filosofia ((le literatura) or (de literatura))*.