Perhaps you should try some spelling variations:
pena literatura » pela literatura, lengua literatura, la literatura
scale studien » scale studies, scale student, duale studien
na literatura » la literatura, a literatura, a literature
equity scale » equity sale, equity style, equity share
e filosofia » la filosofia
studien e » studien es, 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: "equity scale studien e filosofia ((pena literatura) OR (na literatura))*".