Perhaps you should try some spelling variations:
transfer insulation » transfer innovation, transfer simulation, transfer simulations
insulation glass » insulation case, isolation class, insulation blocks
de communication » mobile communication, online communication
developing l2 » developing _, developing a, developing e
a developing » a development
glass rate » pass rate, class race, loss rate
l2 afrique » l afrique, en afrique
rate de » rate due, rate debt, rate does
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 glass rate de communication costs a developing l2 afrique.*.