Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
inflation target » inflation targeting, inflation rate, inflation rates
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technology die » technologie die, technology does, technology 4ir
die inflation » does inflation, der inflation, price inflation
target trade » target grade, market trade, target rate
de afrique » de l'afrique, en afrique, l afrique
trade 2.1 » trade 2.2, trade 4.1, trade 2014
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 die inflation target trade 2.1 communication costs 4 developpement de afrique.*.