Perhaps you should try some spelling variations:
developpement durable » developpement de
verbal communication » nonverbal communication, virtual communication, oral communication
des developpement » des developpements, de developpement, le developpement
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
des verbal » des verbalen, des verbs, models verbal
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation _ des verbal communication a des developpement durable afrique.*.