Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
trade information » price information, private information, trade integration
technology trade » technology trends, technology transfer, technology transfers
developpement en » developpement et, developpement des, developpement de
information age » information storage, information access, information about
e developpement » de developpement, le developpement, et developpement
age race » wages race, age range, cane race
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 age race _ communications costs e developpement en afrique.*.