Perhaps you should try some spelling variations:
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
technology voice » technology choice, technology choices, technology volume
developpement en » developpement et, developpement des, developpement de
voice inflation » price inflation, core inflation, die inflation
4 developpement » de developpement, le developpement, et developpement
rate cante » rate change, rate can, rate changes
cante 1.1 » change 1.1, canon 1.1
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 rate cante 1.1 communication costs 4 developpement en afrique.*.