Perhaps you should try some spelling variations:
data communication » data communications
do developpement » de developpement, du developpement, le developpement
des variation » does variation, de variation, der variation
variation gas » variation des, variation a, aviation gas
typology des » typologie des, typologie der, typology _
des afrique » en afrique, de l'afrique
costs data » cost data
media do » media die, media das, media der

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

• Adding a wildcard symbol may retrieve word variants: typology des variation gas costs data communication media do developpement des afrique.*.