Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
10.4 communication » 1.4 communication, 10.2.4 communication, 10.4.3 communication
trade development » software development
development i150 » development 1, development 1.1, development 1.5
technology die » technologie die, technology does, technology 4ir
inflation base » inflation rate, inflation bias, inflation das
die inflation » does inflation, der inflation, price inflation
costly trade » costs trade, country trade, costly than
base case » use case, base wage
case 10.4 » case 1.4, case 12.4, case 2.4

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

• Adding a wildcard symbol may retrieve word variants: technology die inflation base case 10.4 communication costly trade development i150 afrique.*.