Perhaps you should try some spelling variations:
communications networks » communication networks, telecommunications networks, telecommunications network
do developpement » de developpement, du developpement, le developpement
developpement et » developpement des, developpement de, development east
4 information » 2 information, 1 information
information 3 » information 2
technology 4 » technology _, technology 1, technology 3
networks do » networks _, networks 1, networks a
et afrique » en afrique, l afrique
3 book » 23 book, e book, 2 book

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

• Adding a wildcard symbol may retrieve word variants: technology 4 information 3 book data communications networks do developpement et afrique.*.