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 base » when bad, when face, when have
base 6.13 » case 6.13, base 6.1.1, base 6.4.3
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 base 6.13 communication costs a developpement de afrique.*.