Perhaps you should try some spelling variations:
proper communication » power communication, prone communication, provider communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
communication 2 » communication _, communication a, communication 3
variation 6 » variation _, variations _, variation des
der proper » der property, over proper, der oper
6 der » _ der, 3 der, 1 der
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation 6 der proper communication 2 der developpement en afrique.*.