Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation under » variation der, variation und, variation des
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
new oral » new moral, knew moral, new rural

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation under new oral communication _ de developpement en afrique.*.