Perhaps you should try some spelling variations:
face communication » voice communication, de communication, time communication
information costs » information contents, information centers, information content
developpement en » developpement et, developpement des, developpement de
communication 3 » communication _, communication a
3 developpement » de developpement, le developpement, et developpement
technologies 1 » technologies _, technologies 4, technologies 2
costs 20 » costs 60, costs 2.3, costs 2.1
20 face » 2 face, 2.2 face, 2.3 face

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 20 face communication 3 3 developpement en afrique.*.