Perhaps you should try some spelling variations:
oral communication » personal communication
das developpement » des developpements, de developpement, du developpement
developpement et » developpement des, developpement de, development east
typologien does » typologie des, typologien der, typologie der
variation using » variations during, variation und, variation among
does variation » de variation, der variation, die variation
using does » using deep, being does, using aes
et afrique » en afrique, l afrique
does oral » does formal, does oil

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

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