Perhaps you should try some spelling variations:
used communication » based communication, causes communication, de communication
information users » information use, information centers, information und
developing china » developing china's, development china, developing caring
technologies 4 » technologies _
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
4 information » 2 information, 1 information
china africa » cpia africa, china asia
users form » users from
form used » form und, farm use, formats used
costs 2.3 » costs 4.2, costs 4.4

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information users form used communication costs 2.3 developing china africa.*.