Perhaps you should try some spelling variations:
communications network » communications networks, communication network, communication networks
urban development » human development
a communications » _ communications, a communication, _ communication
development case » development bank, development a, development aid
technologies a » technologies _
a information » _ information, land information, award information
network urban » network area
de a » de la, de sa, e a

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies a information _ de a communications network urban development case afrique.~.
• Adding a wildcard symbol may retrieve word variants: technologies a information _ de a communications network urban development case afrique.*.