Perhaps you should try some spelling variations:
communication model » communication media
radio communication » crisis communication, data communication
1 integrating » 10 integrating, _ integrating, 4 integrating
integrating a » integrating _, integrating human
technology 1 » technology _
des afrique » en afrique, de l'afrique
20 radio » 2 radio, 22 radio, 2.2 radio
a 20 » a 2, _ 20, g 20

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

• Adding a wildcard symbol may retrieve word variants: technology 1 integrating a 20 radio communication model _ developpement des afrique.*.