Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
trade information » price information, private information, trade integration
information wages » information age, information wants, information war
technology trade » technology trends, technology transfer, technology transfers
4 communications » 14 communications, 4 communication, 2 communications
developpement en » developpement et, developpement des, developpement de
e developpement » de developpement, le developpement, et developpement
wages trade » wages race, wharves trade, states trade
trade 4 » trade _, trade a
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 wages trade 4 communications costs e developpement en afrique.*.