Perhaps you should try some spelling variations:
oral communication » personal communication
due developpement » de developpement, du developpement, le developpement
developpement de » developpement des, developpement durable
variation among » starvation among, formation among, variation von
typologien die » typologien der, typologie des, typologie der
die variation » de variation, does variation, der variation
among does » among boys, among les, among donors
de afrique » de l'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 die variation among does oral communication _ due developpement de afrique.*.