Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
some developpement » sme development, de developpement, le developpement
2.3 communication » 3.2 communication, de communication, 4 communication
technology voice » technology choice, technology choices, technology volume
voice inflation » price inflation, core inflation, die inflation
inflation rates » inflation rate
des afrique » en afrique, de l'afrique
rates case » rates cape, states case, rates east
case 2.3 » case 3, case 4.1, case 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology voice inflation rates case 2.3 communication cost some developpement des afrique.*.