Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
ideologien does » ideologie des, ideologien der, ideologie der
does variation » de variation, der variation, die variation
variation bei » variation des, variation der, variation _
vs oral » u.s oral
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: ideologien does variation bei vs oral communication a de developpement en afrique.*.