Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technology transfers » technology transfer
des developpement » des developpements, de developpement, le developpement
transfers sector » transport sector, transfer factor, transfers better
4 communications » 14 communications, 4 communication, 2 communications
developpement en » developpement et, developpement des, developpement de
sector wage » sector wages
wage rate » wage rates
costs des » costs fees
rate 4 » rate _

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

• Adding a wildcard symbol may retrieve word variants: technology transfers sector wage rate 4 communications costs des developpement en afrique.*.