Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.2 communications » 3.2 communication, 3.1 communications, 4.2 communications
technology trade » technology trends, technology transfer, technology transfers
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
trade section » trade sector, trade action, trade sanctions
section cause » section case, sanctions cause, section based
cause changes » use changes, causes channels, use change
changes 3.2 » change 3.2, changes 5.2, changes 4.2
costs le » 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 section cause changes 3.2 communications costs le developpement en afrique.*.