Perhaps you should try some spelling variations:
data communication » data communications
communication cost » communication costs, communication costa, communications costs
technology trade » technology trends, technology transfer, technology transfers
open development » clean development, driven development, human development
trade relations » trade regulation
china start » china state, china part, china states
drink data » during data, ring data, bring data
cost open » post open

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

• Adding a wildcard symbol may retrieve word variants: technology trade relations _ drink data communication cost open development china start.*.