Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information costs » information contents, information centers, information content
developpement de » developpement des, developpement durable
communication 3 » communication _, communication a
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
2.1 downward » 2.5 downward, 5.4 downward, 14.7 downward
costs 2.1 » costs 2.3, costs 4.1, costs 2.2

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

• Adding a wildcard symbol may retrieve word variants: technologies a information costs 2.1 downward communication 3 _ developpement de l'afrique.*.