Perhaps you should try some spelling variations:
developpements de » developpement de, developpement des, developpement du
information data » information d820, information database, information databases
4 communication » 3 communication, 5.4 communication, de communication
technologies 2 » technologies _, technologies 4
de afrique » de l'afrique, en afrique, l afrique
5 das » 1 das, 3 das, _ das
2 das » 1 das
do 4 » do _, do i, do a

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 data do 4 communication ((5 das) OR (2 das)) developpements de afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies 2 information data do 4 communication ((5 das) OR (2 das)) developpements de afrique.*.