Perhaps you should try some spelling variations:
informal communication » internal communication, information communication, internal communications
du developpement » de developpement, le developpement, et developpement
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
6a informal » 6.2 informal, 6.6 informal, _ informal
des afrique » en afrique, de l'afrique
media du » media die, media das, media der

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation _ 6a informal communication media du developpement des afrique.*.