Perhaps you should try some spelling variations:
des developpement » des developpements, de developpement, le developpement
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
technology trade » technology trends, technology transfer, technology transfers
developpement du » developpement de, developpement des, developpement et
trade inflation » grade inflation, trade insulation, rate inflation
du afrique » en afrique, l afrique, de l'afrique
rate rule » rate rules, trade rule
costs des » costs fees
rule 4.2 » rules 4.2, rule 2.2, rule 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology trade inflation rate rule 4.2 communication costs des developpement du afrique.*.