Perhaps you should try some spelling variations:
"intergenerativer belastungsrechnungen" » "intergenerative belastungsrechnung", "intergenerativer lastenverschiebungen"
"intergenerative leistungsrechnung" » "intergenerative belastungsrechnung", "interne leistungsrechnung", "internen leistungsrechnung"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"intergenerative leistungsrechnung\") OR (\"intergenerativer belastungsrechnungen\"))".
• Removing quotes may allow a broader search: (( intergenerative leistungsrechnung ) OR ( intergenerativer belastungsrechnungen )).
• Adding a wildcard symbol may retrieve word variants: (("intergenerative leistungsrechnung") OR ("intergenerativer belastungsrechnungen"))*.