Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
3.3 integration » 4.3 integration, 4.1 integration, 2 integration
technology 3.3 » technology 3.1, technology 3.2, technology 2.3
de afrique » de l'afrique, en afrique, l afrique
der trade » der trager, der traum, fur trade
trade 2.2 » trade 3.2, trade 4.1
costs du » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology 3.3 integration der trade 2.2 communication costs du developpement de afrique.*.