Perhaps you should try some spelling variations:
models studies » model studies, modern studies, modeling studies
le literatura » la literatura, de literatura, de litteratura
e literatura » de literatura, y literatura, e literatur
e filosofia » la filosofia
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: "roi models studies e filosofia ((le literatura) OR (e literatura))*".