Perhaps you should try some spelling variations:
oral communication » personal communication
leur developpement » le developpement, deux developpements, de developpement
developpement et » developpement des, developpement de, development east
typologien die » typologien der, typologie des, typologie der
die variation » de variation, does variation, der variation
rates oral » rates formal, rates rural, rates brazil
et afrique » en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: typologien die variation _ rates oral communication a leur developpement et afrique.*.