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 du » developpement de, developpement des, developpement et
technology case » technology based, technology can, technology change
4 developpement » de developpement, le developpement, et developpement
du afrique » en afrique, l afrique, de l'afrique
when case » when base, women case, when can
case 6.13 » case 6.3, case 6.1, case 6.12
costs 4 » costs _, costs a, costs 4.2

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 4 developpement du afrique.*.