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 4.2 » gaps 1.1, gaps 1.3
4.2 mass » 3.2 mass, 5.2 mass, 4.2.2 mass

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 4.2 mass communication mode urban development co africa.*.