Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, de literatura
scale studien » scale studies, scale student, duale studien
a literatura » la literatura, a literature, y literatura
quito scale » equity scale, auto scale
a filosofia » la filosofia, e filosofia, di filosofia
studien a » studien am, studien _, studien 3

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: "quito scale studien a filosofia ((pela literatura) OR (a literatura))".
• Adding a wildcard symbol may retrieve word variants: quito scale studien a filosofia ((pela literatura) OR (a literatura))*.