Perhaps you should try some spelling variations:
communication network » communication networks, communications network, communications networks
data communication » data communications
technology state » technology strategy, technology system, technology study
en developpement » et developpement, de developpement, le developpement
state formation » state estimation
developpement l » developpement il, developpement la, developpement de
formation 3.1 » formation 3.2, formation 1.1, formation 2.1
network en » network e, network anp, network apn
l afrique » en afrique
iot » riot

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

• Adding a wildcard symbol may retrieve word variants: technology state formation 3.1 iot data communication network en developpement l afrique.*.