Perhaps you should try some spelling variations:
developpement en » developpement et, developpement des, developpement de
communication 1 » communication _, communication a, communication 3
a developpement » au developpement, de developpement, le developpement
technologies 2 » technologies _, technologies 4
information 2 » information 3
2 air » _ air, 2 aim

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 2 information 2 air (mass OR maps) communication 1 a developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 2 information 2 air (mass OR maps) communication 1 a developpement en afrique.*.