Perhaps you should try some spelling variations:
communication between » communication networks
technologies based » technologies used, technology based, technologies a
des developpement » des developpements, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
based formation » based information, based deformation, based formative
4 communication » 3 communication, 5.4 communication, de communication
formation des » formation _
between des » between de, between modes, between nodes
des doses » des choses, des dorfes, des deces
doses 4 » doses _, diodes 4, doses et

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

• Adding a wildcard symbol may retrieve word variants: technologies based formation des doses 4 communication between des developpement en afrique.*.