Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information centre » information centers, information contents
developing china's » development china's, developing asia's, developing africa's
de communication » mobile communication, online communication
technologies 4 » technologies _
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
china's africa » china africa, chinese africa
4 information » 2 information, 1 information
centre how » centre show, century how, center how
how de » how doe, how do, how ae

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information centre how de communication cost 2.4 developing china's africa.*.