Perhaps you should try some spelling variations:
proper communication » power communication, prone communication, provider communication
does developpement » de developpement, des developpements, does development
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
typology der » typologie der, typologien der, typologie des
des afrique » en afrique, de l'afrique
der proper » der property, over proper, der oper
des der » des dr, des ddr, des dem

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

• Adding a wildcard symbol may retrieve word variants: typology der variation des der proper communication _ does developpement des afrique.*.