Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
technology trade » technology trends, technology transfer, technology transfers
regulation wages » regulation wales, regulation cases, regulation changes
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
wages space » wages race
space 2.7 » space 2.1, space 2.2, space 2.3
l afrique » en 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 trade regulation wages space 2.7 communication costs 4 developpement l afrique.*.