Perhaps you should try some spelling variations:
change communication » science communication, mobile communication, online communication
information costs » information contents, information centers, information content
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
technologies 1 » technologies _, technologies 4, technologies 2
5.2 change » 2.2 changes, 3.1 change
de afrique » de l'afrique, en afrique, l afrique
costs 5.2 » costs 4.2, costs 2.2, costs 5.3

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 5.2 change communication _ et developpement de afrique.*.