Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, a literatura
filosofia pela » filosofia della, filosofia del, filosofia para
equity scale » equity sale, equity style, equity share
studien la » studien lap, studien l, studien das
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: "equity scale ((studien la) OR (studien a)) filosofia pela literatura".
• Adding a wildcard symbol may retrieve word variants: equity scale ((studien la) OR (studien a)) filosofia pela literatura*.