Perhaps you should try some spelling variations:
2.2.3 communication » 12.2.4 communication, 3.2 communication, 2.7 communication
technology trade » technology trends, technology transfer, technology transfers
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
regulation 1 » regulation _, regulation a, regulation 4
prices 2.2.3 » prices 2.2.2, prices 7.2.3, prices 11.2.3
de afrique » de l'afrique, en afrique, l afrique
1 prices » 1 price, 2 prices, do prices
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology trade regulation 1 prices 2.2.3 communication costs a developpement de afrique.*.