Perhaps you should try some spelling variations:
trade information » price information, private information, trade integration
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
technology trade » technology trends, technology transfer, technology transfers
information have » information how, information harness, transformation have
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
have trade » slave trade, have made
trade 3.1 » trade 3.2, trade 4.1, trade 2.1
costs et » 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 have trade 3.1 communication costs et developpement en afrique.*.