Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
based communications » based communication, speed communications, aided communications
et developpement » de developpement, le developpement, test development
iv information » 2 information, 1 information
technology iv » technology ii, technology i, technology ict
des afrique » en afrique, de l'afrique
self based » enf based
3.2 self » 4.2 self, 2.2 self
costs et » 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 iv information 3.2 self based communications costs et developpement des afrique.*.