Perhaps you should try some spelling variations:
developing china's » development china's, developing asia's, developing africa's
communication cost » communication costs, communication costa, communications costs
used information » user information, use information, based information
technology used » technology use, technology based, technology users
4 communication » 3 communication, 5.4 communication, de communication
china's africa » china africa, chinese africa
2 developing » 3 developing, 4 developing, 2 development
law debate » law debates, a debate, war debate
debate 4 » debate _, debate 3, debate a
cost 2 » cost 12, cost _, cost 4

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

• Adding a wildcard symbol may retrieve word variants: technology used information law debate 4 communication cost 2 developing china's africa.*.