Perhaps you should try some spelling variations:
communication model » communication media
voice communication » voice communications, mobile communication, device communication
integrating land » integrating a, integrated land, integrating data
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
1 integrating » 10 integrating, _ integrating, 4 integrating
technology 1 » technology _
de afrique » de l'afrique, en afrique, l afrique
4 voice » 4 voices, _ voice, a voice
model a » model 1
land 4 » land _, land a, land 2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 integrating land 4 voice communication model a developpement de afrique.*.