Perhaps you should try some spelling variations:
problems integrating » process integrating, probleme integrativer, problem integrated
communications costs » communication costs, communications _
economic problems » economic progress, economic prospects
4 communications » 14 communications, 4 communication, 2 communications
developpement de » developpement des, developpement durable
integrating new » integrating _, integrating a, integrating gender
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 problems integrating new trade 4 communications costs _ developpement de l'afrique.*.