Perhaps you should try some spelling variations:
downward communication » towards communication, aware communication, hazard communication
information costs » information contents, information centers, information content
developpement en » developpement et, developpement des, developpement de
l developpement » le developpement, de developpement, et developpement
technologies 4 » technologies _
4 information » 2 information, 1 information
2.5 downward » 5.4 downward, 14.7 downward, _ downward
costs 2.5 » costs 2.3, costs 3.5, cost 2.5
a l » a la

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 2.5 downward communication a l developpement en afrique.*.