Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
trade development » software development
inflation rates » inflation rate
development lid » development led, development li, development lie
technology die » technologie die, technology does, technology 4ir
die inflation » does inflation, der inflation, price inflation
costs trade » costly trade
lid afrique » l afrique
rates case » rates cape, states case, rates east
case 4.2 » case 4.1, case 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 case 4.2 communications costs trade development lid afrique.*.