Perhaps you should try some spelling variations:
communication model » communication media
policy innovation » policy innovations, policy integration
lay communication » way communication, layer communication, why communication
innovation flows » innovation grows, information flows, innovation from
de development » e development, ce development, de developpement
flows do » flows how, flows job, flows _
model de » model due, model d, model du

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

• Adding a wildcard symbol may retrieve word variants: technology policy innovation flows do lay communication model de development _ afrique.*.