Perhaps you should try some spelling variations:
transfer insulation » transfer innovation, transfer simulation, transfer simulations
5.4 communication » de communication, data communication
insulation wages » insulation case, insulation layer, insulation e2
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
wages race » wages trade, wage rate, wages case
l afrique » en afrique
race 5.4 » race 1.4, race 6.4, case 5.4
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology transfer insulation wages race 5.4 communication costs a developpement l afrique.*.