Perhaps you should try some spelling variations:
model studies » model study
de literatura » de litterature, la literatura, y literatura
e literatura » y literatura, e literatur, a literatura
3 filosofia » e filosofia, a filosofia, y filosofia
rosi model » rosi modell, osi model, ross model

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 model studies 3 filosofia ((e literatura) OR (de literatura))".
• Adding a wildcard symbol may retrieve word variants: rosi model studies 3 filosofia ((e literatura) OR (de literatura))*.