Perhaps you should try some spelling variations:
risco communication » risk communication, crisis communication, radio communication
communication model » communication media
technologies 2 » technologies _, technologies 4
china afrique » china africa
de risco » de riesgo, de rio, de risi
model a » model 1
gap de » gap die, cap de, gap d

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 de risco communication model a development china afrique.*.