Perhaps you should try some spelling variations:
china communications » china communication, china's communications, chile communications
communications 3.1 » communication 3.1, communications 2.1, communications 3.3
user development » users development, use development, users developments
development law » development latin, development 1
technologies 4 » technologies _
channels 3.2 » channels 3.5, channels 3.7, channels 3.8
law afrique » l afrique
4 informal » 4 informale, _ informal, 3 informal
3.2 china » 2.2 china, 3.1 china, 3.6 china
3.1 user » 3.1 use, 3.2 user, 3.3 user

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 informal channels 3.2 china communications 3.1 user development law afrique.*.