Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
insulation peace » insulation case, resolution peace, education peace
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
technology set » technology sector, technology 1, technology 2.2
set insulation » base insulation, _ insulation, market insulation
process 6.2 » process 2.2, process 6.3, process 6.1
de afrique » de l'afrique, en afrique, l afrique
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 set insulation peace process 6.2 communication costs 4 developpement de afrique.*.