Perhaps you should try some spelling variations:
pela literatura » pena literatura, la literatura, a literatura
filosofia pela » filosofia della, filosofia del, filosofia para
scale studien » scale studies, scale student, duale studien
equity scale » equity sale, equity style, equity share
3 filosofia » e filosofia, a filosofia, y filosofia
studien 3 » studien _, studien 4, studien 5