Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
technology trade » technology trends, technology transfer, technology transfers
regulation rates » regulation rules, regulation notes, regulations notes
developpement en » developpement et, developpement des, developpement de
4 developpement » de developpement, le developpement, et developpement
rates rates » rates notes
rates 2.3 » rates 12.3, rates 4.3, rate 2.3
costs 4 » costs _, costs a, costs 4.2

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technology trade regulation rates rates 2.3 communication costs 4 developpement en afrique.*.