Perhaps you should try some spelling variations:
trade information » price information, private information, trade integration
4.3 communication » 2.3 communication, 4.1 communication, 4 communication
technology trade » technology trends, technology transfer, technology transfers
information wage » information age, information war, information wants
e developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
wage rate » wage rates
l afrique » en afrique
rate 4.3 » rates 4.3, rate 2.4, rate 5.4
costs e » costs _, costs 4, costs a

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 rate 4.3 communication costs e developpement l afrique.*.