Perhaps you should try some spelling variations:
4 communications » 14 communications, 4 communication, 2 communications
developpements l » developpements de, developpement il, developpement la
technologies 2 » technologies _, technologies 4
2 formulation » _ formulation, 3 formulation, la formulation
l afrique » en afrique
a net » a new, _ net, a neo
a et » a set, a bet, a jet

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 formulation _ data 4 communications ((a et) OR (a net)) developpements l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 2 formulation _ data 4 communications ((a et) OR (a net)) developpements l afrique.*.