Perhaps you should try some spelling variations:
china communications » china communication, china's communications, chile communications
adoption diffusion » advection diffusion, education diffusion, reaction diffusion
der developpement » de developpement, des developpements, leur developpement
communications a » communications _, communications law, communications media
developpement l » developpement il, developpement la, developpement de
diffusion can » diffusion von, diffusion a, diffusion cir
l afrique » en afrique
de china » ke china, d china, code china
can de » can do, can code, can deal
a der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technology adoption diffusion can de china communications a der developpement l afrique.*.