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
a developpement » au developpement, de developpement, le developpement
risk inflation » risk information, rising inflation, risk inclination
rate water » gate water, waste water, state water
water 6.2 » water 2.2, water 3.2, water 7.2
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: technology risk inflation rate water 6.2 communication costs a developpement en afrique.*.