Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technology change » technological change, technological changes
change simulation » change simulations, channel simulation, change population
sme development » trade development
development de » development d, development ds, developpement de
aware mobile » afar mobile, more mobile, aware model
de afrique » de l'afrique, en afrique, l afrique
costs sme » costs some, costs amy

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

• Adding a wildcard symbol may retrieve word variants: technology change simulation _ aware mobile communications costs sme development de afrique.*.