Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
science information » price information, change information, finance information
technology science » technology finance, technology acceptance
information what » information war, information when, information wants
2 communications » 2 communication, 3 communications, 4 communications
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
what state » what stage
de afrique » de l'afrique, en afrique, l afrique
state 2 » state _, state a, state 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 science information what state 2 communications costs 4 developpement de afrique.*.