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 des » variation _, variation 6, variation series
diw oral » i oral, ii oral, iii oral
costs de » costs _, costs 4, costs a
des diw » des dix, des dirk
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 des diw oral communication costs de developpement en afrique.*.