Perhaps you should try some spelling variations:
integration sleep » integration deep, integration see, integration some
developpement en » developpement et, developpement des, developpement de
der integration » zur integration, sector integration
2 communication » 3 communication, 4 communication, 1 communication
4 developpement » de developpement, le developpement, et developpement
technology der » technology does, technology 4ir, technology dlt
sleep trade » deep trade
trade 2 » trade _, trade a, trade 4
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 der integration sleep trade 2 communication costs 4 developpement en afrique.*.