Perhaps you should try some spelling variations:
proceedings l'integration » processus d'integration
ecology proceedings » oncology proceedings, economy proceedings, technology proceedings
l'integration de » reintegration der, integration der, integration des
3 communication » 4 communication, de communication, data communication
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
l afrique » en afrique
de trade » die trade, e trade, we trade
trade 3 » 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: ecology proceedings l'integration de trade 3 communication costs 4 developpement l afrique.*.