Perhaps you should try some spelling variations:
2.3 communication » 3.2 communication, de communication, 4 communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement en » developpement et, developpement des, developpement de
technology flow » technology low, technology from, technology food
flow inflation » low inflation, food inflation, log inflation
target while » targets whole, target file, targets where
while 2.3 » chile 2.1, chile 2.2

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

• Adding a wildcard symbol may retrieve word variants: technology flow inflation target while 2.3 communication costs _ developpement en afrique.*.