Perhaps you should try some spelling variations:
progress l'integration » process integration, processus d'integration, pour l'integration
communication paper » communication power, communication pattern, communication partner
economic progress » economic prospects
3.1 developpement » 3.1 development, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
3 communication » 4 communication, de communication, data communication
paper 3.1 » paper 23.2, papers 3.3, paper 1
trade 3 » trade _, trade a, trade 4

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

• Adding a wildcard symbol may retrieve word variants: economic progress l'integration _ trade 3 communication paper 3.1 developpement en afrique.*.