Perhaps you should try some spelling variations:
communications networks » communication networks, telecommunications networks, telecommunications network
a communications » a communication, data communications, a communicative
developpement de » developpement des, developpement durable
1 developpement » de developpement, le developpement, et developpement
technologies 4 » technologies _
4 information » 2 information, 1 information
information 3 » information 2
networks 1 » networks _
de afrique » de l'afrique, en afrique, l afrique
3 die » 2 die, _ die
die a » die al, die _, die 4

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 3 die a communications networks 1 developpement de afrique.*.