Perhaps you should try some spelling variations:
6.13 communication » 6.1.3 communication, 2.3 communication, 4.1 communication
case information » care information, based information, phase information
information when » information what, information war, information wants
developpement de » developpement des, developpement durable
technology case » technology based, technology can, technology change
a developpement » au developpement, de developpement, le developpement
de afrique » de l'afrique, en afrique, l afrique
when case » when base, women case, when can
case 6.13 » case 6.3, case 6.1, case 6.12
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 case information when case 6.13 communication costs a developpement de afrique.*.