Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.2 communications » 3.2 communication, 3.1 communications, 4.2 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 et » developpement des, developpement de, development east
a developpement » au developpement, de developpement, le developpement
et afrique » en afrique, l afrique
rates 3.2 » rates 4.2, rates 5.2, states 3.2
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 3.2 communications costs a developpement et afrique.*.