Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
developpement de » developpement des, developpement durable
technologies co » technologies _, technologies 4, technologies 2
4 developpement » de developpement, le developpement, et developpement
co information » do information, 2 information, 1 information
model update » models update, modes update, model updating
update 2.3 » update 6.3, update 10.3, update 2003
de afrique » de l'afrique, en afrique, l afrique
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 co information model update 2.3 communication costs 4 developpement de afrique.*.