Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
care information » more information, change information, trade information
information what » information war, information when, information wants
developpement en » developpement et, developpement des, developpement de
technology care » technology case, technology curve, technology can
a developpement » au developpement, de developpement, le developpement
what case » what came, what causes, what caused
case 6.2 » case 6.12, case f6.2, case 4.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology care information what case 6.2 communication costs a developpement en afrique.*.