Perhaps you should try some spelling variations:
transfer insulation » transfer innovation, transfer simulation, transfer simulations
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
developpement de » developpement des, developpement durable
insulation wage » insulation case, insulation layer, insulation glass
4 developpement » de developpement, le developpement, et developpement
de afrique » de l'afrique, en afrique, l afrique
wage rate » wage rates
rate 5.2 » rates 5.2, rate 5.4, rate 4.2
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 5.2 communication costs 4 developpement de afrique.*.