Perhaps you should try some spelling variations:
deux developpement » deux developpements, de developpement, du developpement
2.3 communication » 3.2 communication, de communication, 4 communication
technology trade » technology trends, technology transfer, technology transfers
trade inflation » grade inflation, trade insulation, rate inflation
des afrique » en afrique, de l'afrique
rate file » case file, rate fee, rate firm
file 2.3 » file 2.7, file 23, file 2.4.3

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

• Adding a wildcard symbol may retrieve word variants: technology trade inflation rate file 2.3 communication a deux developpement des afrique.*.