Perhaps you should try some spelling variations:
transformation 1.3 » transformation 13.3, transformation 3.3, transformation 1.1
de communication » mobile communication, online communication
developing karst » developing east, developing forest, developing heart
technologie die » technologie de, technologie im, technologie der
4 developing » 3 developing
karst areas » karstic areas, forest areas, thrust areas
1.3 und » 1.3 un, 1.3 une
costs 4 » costs _, costs a, costs 4.2
und de » und der, und des, und den

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

• Adding a wildcard symbol may retrieve word variants: technologie die transformation 1.3 und de communication costs 4 developing karst areas.*.