Perhaps you should try some spelling variations:
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technology 4.2 » technology 2.2, technology 3.2, technology 4.1
4.2 inflation » 3.2 inflation, 12 inflation, 2.3 inflation
target case » target date, target rate, target task
de afrique » de l'afrique, en afrique, l afrique
case 3.1 » case 4.1, case 3.2, case 1
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 4.2 inflation target case 3.1 communication costs 4 developpement de afrique.*.