Perhaps you should try some spelling variations:
allgemeiner » allgemeinen, allgemeines
allgemeinerere » allgemeinenere, allgemeinesere, allgemeinerer, allgemeinere, allgemeineren
allgemeinenees » allgemeinenen, allgemeineres, 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 (allgemeinenees OR (allgemeinerere OR allgemeine))).
• Adding a wildcard symbol may retrieve word variants: bildung (allgemeiner or (allgemeinenees or (allgemeinerere or allgemeine)))*.