Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
technologies 3.1 » technologies 2.1, technologies 3.2, technologies _
developpement en » developpement et, developpement des, developpement de
inflation rates » inflation rate
a developpement » au developpement, de developpement, le developpement
3.1 inflation » 3.2 inflation, 2.3.1 inflation, 2.3 inflation
rates costa » states costs
costa 6.2 » cost 3.2, costs 6.4, cosi 6.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.1 inflation rates costa 6.2 communication costs a developpement en afrique.*.