Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
trade development » software development
10 communication » 1 communication, de communication, 3 communication
technology die » technologie die, technology does, technology 4ir
development iv » development ii, development 1, development i150
die inflation » does inflation, der inflation, price inflation
costly trade » costs trade, country trade, costly than
iv afrique » en afrique, l afrique
rate case » state case, write case, rate caps
case 10 » cases 10, case 1, case 10.4

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

• Adding a wildcard symbol may retrieve word variants: technology die inflation rate case 10 communication costly trade development iv afrique.*.