Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
variation among » starvation among, formation among, variation von
ideologie de » ideologie der, ideologie des, ideologie du
de variation » der variation, die variation, does variation
among donors » among doctors, among actors
des afrique » en afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: ideologie de variation among donors oral communication _ de developpement des afrique.*.