Perhaps you should try some spelling variations:
informal communication » internal communication, information communication, internal communications
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
variation der » variation des, variation bei, variation _
does informal » do informal, does formal, does informality
de afrique » de l'afrique, en afrique, l afrique
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation der does informal communication _ et developpement de afrique.*.