Perhaps you should try some spelling variations:
communication what » communication a, communication without, communication within
information 13.1.2 » information 13.1.1, information 13.1.3, information 13.2.1.2
development states » development status, development stages, developmental states
urban development » human development
de communication » mobile communication, online communication
technologies 4 » technologies _
states african » state africa, slaves african, status africa
4 information » 2 information, 1 information
13.1.2 a » 1.3.1.2 a, 1.1.2 a, 3.1.2 a
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 13.1.2 a de communication what urban development states african.*.