Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
integration work » integrating world, integration framework, integration 3
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
und integration » grid integration, und interpretation
technology und » technology fund, technology used, technology use
work trade » pork trade, world trade, work travel
trade 6.2 » trade 2.2, trade 3.2, trade 4.2
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 und integration work trade 6.2 communication costs du developpement de l'afrique.*.