Perhaps you should try some spelling variations:
human developpement » human development, human developments, un developpement
data communication » data communications
information costs » information contents, information centers, information content
developpement de » developpement des, developpement durable
communication 3 » communication _, communication a
technologies 1 » technologies _, technologies 4, technologies 2
costs linked » cross linked, costs limited, costs land
de afrique » de l'afrique, en afrique, l afrique
3 human » 2 human

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information costs linked data communication 3 human developpement de afrique.*.