Perhaps you should try some spelling variations:
1973 communication » 13 communication, 1.3 communication, 19 communication
technology change » technological change, technological changes
change inflation » change information, change innovation, change simulation
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
inflation rates » inflation rate
rates hans » rates have
de afrique » de l'afrique, en afrique, l afrique
hans 1973 » hans 1963, hans 1900, cars 1973
costs au » costs a, costs amy, costs _

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

• Adding a wildcard symbol may retrieve word variants: technology change inflation rates hans 1973 communication costs au developpement de afrique.*.