Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 communication
technology voice » technology choice, technology choices, technology volume
developpement de » developpement des, developpement durable
voice inflation » price inflation, core inflation, die inflation
4 developpement » de developpement, le developpement, et developpement
inflation auf » inflation a, inflation rate, inflation _
de afrique » de l'afrique, en afrique, l afrique
auf case » auf das, off case
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 voice inflation auf case 3.1 communications costs 4 developpement de afrique.*.