Perhaps you should try some spelling variations:
oral communication » personal communication
du developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
technologies a » technologies _, technologies 4, technologies 2
a innovation » 2 innovation, 3 innovation, 4 innovation
l afrique » en afrique
12.3 5 » 12.3 _, 12.3 a, 12.3 c
1.3 5 » 1.3 _, 1.3 a, 1.3 2

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

• If you are trying to use Boolean operators, they must be ALL CAPS: technologies a innovation ((1.3 5) OR (12.3 5)) oral communication _ du developpement l afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies a innovation ((1.3 5) or (12.3 5)) oral communication _ du developpement l afrique.*.