Perhaps you should try some spelling variations:
mixed initiativen » mixed initiative, die initiativen, failed initiatives
initiativen als » initiativen des, initiativen und, initiativen fur
mixed initial » mixed martial, mixed initiative
initial art » initial part, initial care, initial app

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: (( mixed initial art ) OR ( mixed initiativen als )).
• Adding a wildcard symbol may retrieve word variants: (( mixed initial art ) or ( mixed initiativen als ))*.