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
technology case » technology based, technology can, technology change
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
when case » when base, women case, when can
case 6.13 » case 6.3, case 6.1, case 6.12
l afrique » en afrique
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 l afrique.*.