Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
5.5 communications » 3.5 communication, 2.5 communication, 3.1 communications
trade information » price information, private information, trade integration
technology trade » technology trends, technology transfer, technology transfers
information wage » information age, information war, information wants
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
de afrique » de l'afrique, en afrique, l afrique
rates 5.5 » rates 4.5, rates 5.2, rates 4.2
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 trade information wage rates 5.5 communications costs a developpement de afrique.*.