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