Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
10 communications » 10 communication, 14 communications, 2 communications
clean development » human development, urban development
technology trade » technology trends, technology transfer, technology transfers
integration do » integration de, integration du, integration does
costs clean » costs clear
do goes » dow goes, d goes, do does
goes 10 » notes 10, comes 10, gates 10

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration do goes 10 communications costs clean development africa _.*.