Perhaps you should try some spelling variations:
3.3 communications » 3.1 communications, 3.3 communication, 2.3 communication
exchange problems » change problems, change problem, exchange programs
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
4 information » 2 information, 1 information
technology 4 » technology _, technology 1, technology 3
problems 3.3 » problems _, problems a, problems 4
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 4 information exchange problems 3.3 communications _ a developpement l afrique.*.