Perhaps you should try some spelling variations:
transfer insulation » transfer innovation, transfer simulation, transfer simulations
insulation layer » insulation case, interaction layer, translation layer
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
4 developpement » de developpement, le developpement, et developpement
costs 4 » costs _, costs a, costs 4.2
rate 3 » rate _, rate 4, rate a

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

• Adding a wildcard symbol may retrieve word variants: technology transfer insulation layer rate 3 communication costs 4 developpement en afrique.*.