Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
inflation rates » inflation rate
a developpement » au developpement, de developpement, le developpement
rates file » rates figure
file 6.2 » file 62, falle 6.2, files 6.3
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: technology _ inflation rates file 6.2 communication costs a developpement en afrique.*.