Perhaps you should try some spelling variations:
communication mode » communication model, communication modes, communication module
urban development » human development
information gaps » information gap
technologies 2 » technologies _, technologies 4
development co » development case, development china
mode urban » modern urban, pope urban
co africa » can africa, do african, 1 africa
gaps 3.2 » gaps 4.2, maps 3.2, gaps 3.7
3.2 mass » 3.2.3 mass, 3.2 main

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information gaps 3.2 mass communication mode urban development co africa.*.