Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
6.2 communications » 6.2 communication, 4.2 communications, 3.2 communication
developpement de » developpement des, developpement durable
dis integration » disintegration _
integration wie » integration sowie, integration wage, integration wege
4 developpement » de developpement, le developpement, et developpement
technology dis » technology does, technology 4ir, technology dlt
de afrique » de l'afrique, en afrique, l afrique
wie trade » die trade, we trade, white trade
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
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: technology dis integration wie trade 6.2 communications costs 4 developpement de afrique.*.