Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.5 communications » 3.5 communication, 3.1 communications, 2.5 communication
trade information » price information, private information, trade integration
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 3.5 » rate 3.4, rate 3.6, rate 7.5
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 3.5 communications costs e developpement l afrique.*.