Perhaps you should try some spelling variations:
da literatura » la literatura, a literatura, de literatura
stufe studien » studie studien, stufen studie, studien studien
erste stufe » erster stufe
3 filosofia » y filosofia, _ filosofia, la filosofia
e filosofia » la filosofia
a filosofia » la filosofia, di filosofia

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: erste stufe studien ((((3 filosofia) OR (e filosofia))) OR (a filosofia)) da literatura.
• The words AND, OR and NOT may confuse the search; try adding quotes: "erste stufe studien ((((3 filosofia) OR (e filosofia))) or (a filosofia)) da literatura".
• Adding a wildcard symbol may retrieve word variants: erste stufe studien ((((3 filosofia) OR (e filosofia))) or (a filosofia)) da literatura*.