Perhaps you should try some spelling variations:
technology trade » technology trends, technology transfer, technology transfers
trade innovation » trade information, drive innovation, trade integration
innovation wages » innovation age, innovation wave, innovation changes
developpement de » developpement des, developpement durable
3 communication » 4 communication, de communication, data communication
4 developpement » de developpement, le developpement, et developpement
wages spaces » places spaces, papers spaces, spaces spaces
de afrique » de l'afrique, en afrique, l afrique
spaces 3 » spaces _
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 innovation wages spaces 3 communication costs 4 developpement de afrique.*.