Perhaps you should try some spelling variations:
transfer insulation » transfer innovation, transfer simulation, transfer simulations
13 communication » 3 communication, 1 communication, 10 communication
developpement en » developpement et, developpement des, developpement de
insulation wage » insulation case, insulation layer, insulation glass
4 developpement » de developpement, le developpement, et developpement
wage rate » wage rates
rate 13 » rate 1, rate 10, rate 3
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology transfer insulation wage rate 13 communication costs 4 developpement en afrique.*.