Perhaps you should try some spelling variations:
regelungsbefugnis » regelungsbedurfnis, regelungsgefuges, regelungsgefuge
regelungsbefugnisse » regelungsbedurfnisse, regelungsgefugesse, regelungsgefugese, handlungsbefugnisse, weisungsbefugnisse, ermittlungsbefugnisse
regelungsbedurfnisse » regelungsbedurfnisses, regelungsbedurfnis, vergeltungsbedurfnisse
regulierungsbedurfnis » regulierungsbedarf

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: (regelungsbefugnis OR ((regelungsbefugnisse OR regelungsbedurfnisse) OR regulierungsbedurfnis)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(regelungsbefugnis or ((regelungsbefugnisse OR regelungsbedurfnisse) or regulierungsbedurfnis))".
• Adding a wildcard symbol may retrieve word variants: (regelungsbefugnis or ((regelungsbefugnisse OR regelungsbedurfnisse) or regulierungsbedurfnis))*.