Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
du developpement » de developpement, le developpement, et developpement
developpement en » developpement et, developpement des, developpement de
itc information » pitch information, c information, math information
technology itc » technology ict, technology ii, technology i
information 1 » information 2, information 3, information 3.2
das voice » das choice, a voice
costs du » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology itc information 1 das voice communication costs du developpement en afrique.*.