Perhaps you should try some spelling variations:
active communication » reactive communication, proactive communication, actions communication
information centers » information contents, information officers
communication 2.1 » communication 22.1, communications 2.1, communication 2.4
technologies key » technologies any, technologies know, technologies _
key information » energy information
14 developing » 4 developing, 1 developing, 10 developing
developing a » developing _
centers 2.3 » center 2.3, centers 2.2, centers 2.8
2.3 active » 3.3 active, 7.3 active, 8.3 active
a afrique » l afrique, en afrique
2.1 14 » 2.1 11, 2.1 1g

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

• Adding a wildcard symbol may retrieve word variants: technologies key information centers 2.3 active communication 2.1 14 developing a afrique.*.