Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.1 communications » 4.1 communication, 3.1 communications, 4.1 communicating
du developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
3 integration » die integration, der integration, data integration
technology 3 » technology _, technology 1, technology 4
trade 4.1 » trade 2.2, trade 3.2
l afrique » en afrique
costs du » costs _, costs 4, costs a
3 trade » 1 trade, 4 trade, 2 trade

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

• Adding a wildcard symbol may retrieve word variants: technology 3 integration 3 trade 4.1 communications costs du developpement l afrique.*.