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 2 » technologies _, technologies 4
de afrique » de l'afrique, en afrique, l afrique
costs age » costs case, costs a, costs amy
age data » wage data, cge data, image data
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 2 information costs age data communication 3 human developpement de afrique.*.