Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
variation bei » variation des, variation der, variation _
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation bei der online communication _ et developpement en afrique.*.