Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
technology trade » technology trends, technology transfer, technology transfers
trade innovation » trade information, drive innovation, trade integration
developpement en » developpement et, developpement des, developpement de
innovation node » innovation nodes, innovation code, innovation model
a developpement » au developpement, de developpement, le developpement
node date » node case
date 6.2 » daten 6.2, data 6.2, date 4.2
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 trade innovation node date 6.2 communication costs a developpement en afrique.*.