Perhaps you should try some spelling variations:
oral communication » personal communication
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
apologien der » typologien der, apologie des, ideologien der
der variation » de variation, does variation, die variation
variation bei » variation des, variation der, variation _
does oral » does formal, does oil
bei does » being does, behn does, bei der
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: apologien der variation bei does oral communication a des developpements en afrique.*.