Perhaps you should try some spelling variations:
technologien palm » technologien als, technologien am, technologien im
de communication » mobile communication, online communication
formation labor » information labor, creation labor, automation labor
development 2.1 » development 1
palm formation » palm information, xylem formation, slum formation
4 development » 2 development, 4 developing
2.1 african » 2.3 african, 2.4 african, 1.1 african
labor low » labor flow, labor law, labor flows
costs 4 » costs _, costs a, costs 4.2
low de » low pe, low debt, low dose

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologien palm formation labor low de communication costs 4 development 2.1 african.*.