Perhaps you should try some spelling variations:
allgemeinstes » allgemeinsten, allgemeinste, allgemeinster
allgemeinerer » allgemeinere, allgemeineren, allgemeiner
allgemeinenesen » allgemeinenen, allgemeineren, allgemeinwissen

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 (allgemeine OR (allgemeinstes OR (allgemeinerer OR allgemeinenesen))).
• Adding a wildcard symbol may retrieve word variants: bildung (allgemeine or (allgemeinstes or (allgemeinerer or allgemeinenesen)))*.