Perhaps you should try some spelling variations:
data communication » data communications
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation das » variation des, variation data, variations des
de variation » der variation, die variation, does variation
dem data » dpm data, em data, them data
das dem » das der, das den, des dem

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (typologie OR typologies) de variation das dem data communication _ de developpement en afrique.~.
• Adding a wildcard symbol may retrieve word variants: (typologie or typologies) de variation das dem data communication _ de developpement en afrique.*.