Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
des variation » does variation, de variation, der variation
variation 6 » variation _, variations _, variation des
die oral » die moral, die orte
costs de » costs _, costs 4, costs a
6 die » 2 die, 3 die, _ die
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation 6 die oral communication costs de developpement en afrique.*.