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
d1 developpement » de developpement, du developpement, le developpement
developpement en » developpement et, developpement des, developpement de
4 communication » 3 communication, 5.4 communication, de communication
paper d1 » paper 1, paper d, paper 3.1
trade 4 » trade _, trade a

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 4 communication paper d1 developpement en afrique.*.