Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
typologie et » typologie des, typologie der, typologie von
et variation » der variation, bei variation, 2 variation
variation 6 » variation _, variations _, variation des
6 ddr » 6 der, _ ddr
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: typologie et variation 6 ddr oral communication a de developpement en afrique.*.