Perhaps you should try some spelling variations:
oral communication » personal communication
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
typologie does » typologie des, typologie der, typologie cices
does variation » de variation, der variation, die variation
variation over » variation der, variation notes, variation des
over knew » over new
knew oral » knew moral, new oral, new moral

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

• Adding a wildcard symbol may retrieve word variants: typologie does variation over knew oral communication _ le developpement en afrique.*.