Perhaps you should try some spelling variations:
trade information » price information, private information, trade integration
information ratio » information nation, information matrix, information section
6.4 communication » 5.4 communication, 1.4 communication, 2.4 communication
technology trade » technology trends, technology transfer, technology transfers
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
ratio race » nation race, ratio price, rat race
race 6.4 » race 1.4, grace 6.2, races 6.3
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 ratio race 6.4 communication costs et developpement en afrique.*.