Perhaps you should try some spelling variations:
5.5 communication » 3.5 communication, 2.5 communication, 5.5.2 communication
developpement du » developpement de, developpement des, developpement et
information war » information what, information wants, information when
4 developpement » de developpement, le developpement, et developpement
du afrique » en afrique, l afrique, de l'afrique
war rules » water rules
rules 5.5 » rules 5.1, rules 3.2, rules 4.2
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 _ information war rules 5.5 communication costs 4 developpement du afrique.*.