Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.1 communications » 3.1 communication, 4.1 communication, 1.1 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 3.1 » trade 3.2, trade 4.1, trade 2.1
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 3.1 communications costs 4 developpement de afrique.*.