Perhaps you should try some spelling variations:
oral communication » personal communication
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
de afrique » de l'afrique, en afrique, l afrique
does oral » does formal, does oil
a et » a set, a net, a bet

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

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