Perhaps you should try some spelling variations:
oil communication » oral communication, social communication, moral communication
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
variation bei » variation des, variation der, variation _
bei does » being does, behn does, bei der
does oil » des oil, does aid, does our

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation bei does oil communication _ der developpement de l'afrique.*.