Perhaps you should try some spelling variations:
voice communications » mobile communications, guinea communications, online communications
communications a » communications _, communications law, communications media
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
typologies des » typologie des, typologie der, typologien der
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
des deas » des des, des degats, des delays
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: typologies des variation des deas voice communications a de developpement en afrique.*.