Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
der developpement » de developpement, des developpements, leur developpement
technology trade » technology trends, technology transfer, technology transfers
developpement en » developpement et, developpement des, developpement de
2 communication » 3 communication, 4 communication, 1 communication
regulation das » regulation des, regulation case, regulation data
das prices » gas prices, gas price, do prices
prices 2 » prices _, prices a, prices 3

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

• Adding a wildcard symbol may retrieve word variants: technology trade regulation das prices 2 communication phase der developpement en afrique.*.