Perhaps you should try some spelling variations:
developpement la » developpement de, developpement et, developpement du
technology trade » technology trends, technology transfer, technology transfers
1 communication » 10 communication, 3 communication, 4 communication
4 developpement » de developpement, le developpement, et developpement
la afrique » l afrique, la fabrique, en afrique
der trade » der trager, der traum, fur trade
trade 1 » 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 trade integration der trade 1 communication costs 4 developpement la afrique.*.