Perhaps you should try some spelling variations:
communication network » communication networks, communications network, communications networks
mass communication » risk communication, _ communication, mobile communication
urban development » human development
technologies new » technologies _, technologies a
development case » development bank, development a, development aid
new information » _ information, energy information, chief information
network urban » network area
de mass » does mass, ice mass

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

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