Perhaps you should try some spelling variations:
active communication » reactive communication, proactive communication, actions communication
communication model » communication media
true development » tree development, trade development, three development
development case » development china
technologies 2 » technologies _, technologies 4
case african » class african, east african, cases africa
2.3 active » 3.3 active, 7.3 active, 8.3 active
model true » model tree, model three, model trade
gap 2.3 » gap 2.5

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 2.3 active communication model true development case african.*.