Perhaps you should try some spelling variations:
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
developpement de » developpement des, developpement durable
inflation rates » inflation rate
4 developpement » de developpement, le developpement, et developpement
technology die » technologie die, technology does, technology 4ir
die inflation » does inflation, der inflation, price inflation
rates trade » states trade, rules trade, wages trade
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 rates trade 2.1 communication costs 4 developpement de l'afrique.*.