Perhaps you should try some spelling variations:
active communication » reactive communication, proactive communication, actions communication
information costs » information contents, information centers, information content
communication 6.1 » communication 4.1, communication 7.1, communication 1.1
technologies 4 » technologies _
4 information » 2 information, 1 information
1 afrique » l afrique, en afrique, 1 enrique
4 active » _ active, 3 active, 2 active
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information costs 4 active communication 6.1 _ development 1 afrique.*.