Perhaps you should try some spelling variations:
china communication » china communications, chief communication, china's communications
communication step » communication set, communication system, communication styles
based development » basin development, land development, rapid development
information 5.2 » information 15.2, information 1.2, information 5.4
technologies f » technologies _, technologies 4, technologies 2
f information » 2 information, 1 information, 3 information
area china » areas china, korea china, asia china
step based » ship based, http based, esteem based
5.2 area » 4.5.2 area, 5.2 korea, 5.2 arten

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

• Adding a wildcard symbol may retrieve word variants: technologies f information 5.2 area china communication step based development _ african.*.