Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement et » developpement des, developpement de, development east
from inflation » food inflation, from isolation, from information
target while » targets whole, target file, targets where
et afrique » en afrique, l afrique
while 4.1 » whole 4.11, agile 4.1

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

• Adding a wildcard symbol may retrieve word variants: technology from inflation target while 4.1 communication costs _ developpement et afrique.*.