Perhaps you should try some spelling variations:
ii literatura » ii literatur, ii literature, iii literature
filosofia ii » filosofia di, filosofica di, filosofia de
sets scales » sets scale, sets scaled, sets locales
studien der » studie der, studenten der
studien de » studien die, studien des, studien dd

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: sets scales ((studien de) OR (studien der)) filosofia ii literatura.
• Adding a wildcard symbol may retrieve word variants: sets scales ((studien de) or (studien der)) filosofia ii literatura*.