Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
innovation rates » innovation rate, innovation notes, innovation race
developpement en » developpement et, developpement des, developpement de
technological 2 » technological _, technological 3.5, technological art
a developpement » au developpement, de developpement, le developpement
rates daten » rates latin, rates rates, rates data
daten 6.2 » daten 7.2, date 6.2, daten 2.2
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: technological 2 innovation rates daten 6.2 communication costs a developpement en afrique.*.