Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
long communications » kong communications, do communications, global communications
technologien des » technologien fur, technologien und, technologies 2
information gaps » information gap
developing karst » developing east, developing forest, developing heart
des information » des informations, does information, dis information
4 developing » 3 developing
karst areas » karstic areas, forest areas, thrust areas
guide long » guide hong
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: technologien des information gaps guide long communications costs 4 developing karst areas.*.