Perhaps you should try some spelling variations:
china communications » china communication, china's communications, chile communications
information center » information centers, information centre, information content
communications 3.4 » communication 3.4, communications 3.3, communications 8.4
developing rates » developing states, developing water, developing cities
1 developing » 3 developing, 4 developing, 2 developing
rates africa » state africa
center 2.3 » center 2.1, center 2.0, center 2.5
2.3 china » 6.3 china, 2.3 china's, 2.3.6 china
3.4 1 » 3.4 _, 3.4 a, 3.0 1

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information center 2.3 china communications 3.4 1 developing rates africa.*.