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
2.2 active » 3.3 active, 1.1 active, 2.2 action
model true » model tree, model three, model trade
gap 2.2 » gap 2.3, gap 2.5, eap 2.2

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 2.2 active communication model true development case african.*.