Perhaps you should try some spelling variations:
reaction communication » reactive communication, relations communication, actions communication
communication models » communications models, communication model, communication modes
development urban » development bank, development band, development update
technologies 2 » technologies _, technologies 4
3.8 reaction » 3.2 reaction, 3.7 reaction, 3.5 reactions
urban africa » urban area
models 2 » models 1, models 3, models 4
gap 3.8 » gaap 3.4, gap 13.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information gap 3.8 reaction communication models 2 development urban africa.*.