Perhaps you should try some spelling variations:
developpement durable » developpement de
data communication » data communications
des developpement » des developpements, de developpement, le developpement
variations des » variation des, variationen des, variations west
den data » dan data, dn data, open data
des den » es den, des dem, des der
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typologies _ variations des den data communication a des developpement durable afrique.*.