Perhaps you should try some spelling variations:
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
technology voice » technology choice, technology choices, technology volume
inflation target » inflation targeting, inflation rate, inflation rates
developpement la » developpement de, developpement et, developpement du
voice inflation » price inflation, core inflation, die inflation
target case » target date, target rate, target task
la afrique » l afrique, la fabrique, en afrique
case 5.2 » case 4.2, case 3.2, case 2

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

• Adding a wildcard symbol may retrieve word variants: technology voice inflation target case 5.2 communication costs _ developpement la afrique.*.