Perhaps you should try some spelling variations:
scale studien » scale studies, scale student, duale studien
le literature » e literature, 2e literature, ce literature
filosofia le » filosofia de, filosofia e, filosofia del
tests scale » tests stable, sets scale, tests safe
3 filosofia » e filosofia, a filosofia, y filosofia
studien 3 » studien _, studien 4, studien 5