Perhaps you should try some spelling variations:
allgemeiner » allgemeine, allgemeinen
allgemeinenene » allgemeinenen, allgemeineren, allgemeinen
allgemeineer » allgemeinerer, allgemeineren, allgemeinenen
allgemeines » allgemeine, allgemeinen

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: bildung (allgemeiner OR (allgemeinenene OR (allgemeineer OR allgemeines))).
• Adding a wildcard symbol may retrieve word variants: bildung (allgemeiner or (allgemeinenene or (allgemeineer or allgemeines)))*.