Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
transfer operation » transfer operations, transfer operator, transport operation
doha development » a development, 2 development
development rate » development create, development route, development water
rate africa » rates africa, rates aafrica, trade africa
costs doha » costs data, costs down
e data » e datas, age data, cge data

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

• Adding a wildcard symbol may retrieve word variants: technology transfer operation _ e data communications costs doha development rate africa.*.