Perhaps you should try some spelling variations:
allgemein » allgemeines, allgemeiner
allgemeinerere » allgemeineserere, allgemeinererere, allgemeinerer, allgemeinere, allgemeineren
allgemeine » allgemeinese, allgemeinere
allgemeinen » allgemeinesen, allgemeineren

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 (allgemein OR ((allgemeinerere OR allgemeine) OR allgemeinen))*.