Perhaps you should try some spelling variations:
e literatura » de literatura, y literatura, e literatur
rosi models » rosi modell, osi model, osi modell
e filosofia » la filosofia
filosofia e » filosofia de, filosofia del
roi models » roi model, coli models, loci models

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: "((rosi models) OR (roi models)) studies e filosofia e literatura*".