Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technologies dans » technologies can, technologies any, technologies daf
information needs » information networks
dans information » dns information, dis information, does information
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
de afrique » de l'afrique, en afrique, l afrique
costs au » costs a, costs amy, costs _

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

• Adding a wildcard symbol may retrieve word variants: technologies dans information needs _ voice communication costs au developpement de afrique.*.