Perhaps you should try some spelling variations:
oral communication » personal communication
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
variation among » starvation among, formation among, variation von
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
among does » among boys, among les, among donors
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: typologie der variation among does oral communication _ au developpement en afrique.*.