Perhaps you should try some spelling variations:
2.4 communication » 2.14 communication, 5.4 communication, 2.3 communication
information when » information what, information war, information wants
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technology 1 » technology _
when rules » ten rules, wooden rules
de afrique » de l'afrique, en afrique, l afrique
rules 2.4 » rules 2.2, rules 7.4, rules 4
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 1 information when rules 2.4 communication costs 4 developpement de afrique.*.