Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
technology trade » technology trends, technology transfer, technology transfers
developpement de » developpement des, developpement durable
trade inflation » grade inflation, trade insulation, rate inflation
inflation rates » inflation rate
4 developpement » de developpement, le developpement, et developpement
rates rate » rates rates, dates rates, rates raise
de afrique » de l'afrique, en afrique, l afrique
rate 4.2 » rates 4.2, rate 4.3, rate 5.2
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 inflation rates rate 4.2 communication costs 4 developpement de afrique.*.