Perhaps you should try some spelling variations:
developpement en » developpement et, developpement des, developpement de
4 communication » 3 communication, 5.4 communication, de communication
information he » information have, information how, information 2
4 information » 2 information, 1 information
technology 4 » technology _, technology 1, technology 3
he spaces » he space, use spaces, lp spaces
spaces 4 » spaces _, spaces 3, spaces 1

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

• Adding a wildcard symbol may retrieve word variants: technology 4 information he spaces 4 communication costs _ developpement en afrique.*.