Perhaps you should try some spelling variations:
communication protocols » communication processes, communication practices
china communication » china communications, chief communication, china's communications
4a information » a information, via information, lca information
technology 4a » technology 4, technology a, technology 4.1
information a » information age, information about
4 development » 2 development, 4 developing
protocols 4 » protocols _, protocols 5, protocols 1
2.2 china » 12.2 china, 2.1 china, 2.3 china
a 2.2 » _ 2.2, a 3.2, a 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 4a information a 2.2 china communication protocols 4 development latin afrique.*.