Perhaps you should try some spelling variations:
services communication » device communication, service telecommunication, crisis communication
leur developpement » le developpement, deux developpements, de developpement
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
des afrique » en afrique, de l'afrique
e services » care services
des e » des _, des 3
theorie » theories

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

• Adding a wildcard symbol may retrieve word variants: theorie der variation des e services communication a leur developpement des afrique.*.