Perhaps you should try some spelling variations:
proper communication » power communication, prone communication, provider communication
does developpement » de developpement, des developpements, does development
developpement en » developpement et, developpement des, developpement de
how variation » how valuation, does variation, four variation
variation der » variation des, variation bei, variation _
typology how » typology from, typology _, typology 4.1
der proper » der property, over proper, der oper
der der » oder der, der de, der den

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

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