Perhaps you should try some spelling variations:
modell studien » model studies, models studies, moderne studien
e literatura » de literatura, e literatur, a literatura
y literatura » la literatura
rosi modell » osi modell, osi model, osi modells
5 filosofia » e filosofia, a filosofia, y filosofia
studien 5 » studien _, studien 3, studien 4

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 modell studien 5 filosofia ((e literatura) OR (y literatura))".
• Adding a wildcard symbol may retrieve word variants: rosi modell studien 5 filosofia ((e literatura) OR (y literatura))*.