Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
2.3 communications » 2.3 communication, 4.3 communication, 1.3 communication
trade information » price information, private information, trade integration
information wages » information age, information wants, information war
technology trade » technology trends, technology transfer, technology transfers
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
wages space » wages race
space 2.3 » space 2.1, space 2.2, space 3.3
l afrique » en afrique
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 wages space 2.3 communications costs a developpement l afrique.*.