Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, a literatura
scale studien » scale studies, scale student, duale studien
equity scale » equity sale, equity style, equity share
y filosofia » e filosofia, la filosofia, di filosofia
a filosofia » la filosofia, e filosofia, di filosofia

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