Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
4 communication » 3 communication, 5.4 communication, de communication
technologies 4 » technologies _
4 information » 2 information, 1 information
des afrique » en afrique, de l'afrique
3.2 does » 13.2 does, 3.1 does, 3.4.2 does
does 4 » does _, does a, does e

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 3.2 does 4 communication media leur developpement des afrique.*.