Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
integrating land » integrating a, integrated land, integrating data
developpement et » developpement des, developpement de, development east
3.1 integrating » 3.2 integrating, 3.3 integrating, 3.6 integrating
a developpement » au developpement, de developpement, le developpement
technology 3.1 » technology 1, technology 2.2, technology _
et afrique » en afrique, l afrique
3.2 voice » 3.2 choice, 2.1 voice, 2.4 voice
land 3.2 » land 2.2, hand 3.2, land 3.3
media a » media _, media 1, media 3

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

• Adding a wildcard symbol may retrieve word variants: technology 3.1 integrating land 3.2 voice communication media a developpement et afrique.*.