Perhaps you should try some spelling variations:
oral communication » personal communication
des developpement » des developpements, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
information 5.2 » information 15.2, information 1.2, information 5.4
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
do oral » do rural, who oral

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

• Adding a wildcard symbol may retrieve word variants: technologies a information 5.2 do oral communication _ des developpement en afrique.*.