Perhaps you should try some spelling variations:
technologies used » technologies based, technology used, technologies _
3.2 communication » 3 communication, 2.3 communication, de communication
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
agricultural co » agricultural crop, agricultural _, agricultural crops
used improving » users improving, ed improving, field improving
co 3.2 » go 3.2, core 3.2, cost 3.2

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

• Adding a wildcard symbol may retrieve word variants: technologies used improving agricultural co 3.2 communication _ et developpement en afrique.*.