Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
inflation wage » inflation rate, inflation target, inflation rates
de afrique » de l'afrique, en afrique, l afrique
rates 4.2 » rates 4.5
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 _ inflation wage rates 4.2 communication costs a developpement de afrique.*.