Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
inflation target » inflation targeting, inflation rate, inflation rates
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
species 2.7 » species 12.7, species 2.3, species 2.1
l afrique » en afrique
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 _ inflation target species 2.7 communication costs 4 developpement l afrique.*.