Perhaps you should try some spelling variations:
china communication » china communications, chief communication, china's communications
information 4.5.2 » information 1.5.2, information 4.3.2, information 3.5.2
communication set » communication sur, communication sector, communication state
based development » basin development, land development, rapid development
technologies 4 » technologies _
4 information » 2 information, 1 information
development 2 » development 1, development 2.1, development 2.3
4.5.2 area » 4.3.1.2 area, 4.3.2.2 area, 4.5.2 stream
area china » areas china, korea china, asia china
set based » smt based, sat based, asset based
2 african » _ african, 1 african

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 4.5.2 area china communication set based development 2 african.*.