Perhaps you should try some spelling variations:
formen communication » force communication, formen kommunikation, open communication
technologien aids » technologien als, technologien ad, technologien des
aids information » chandos information, series information
developing karst » developing east, developing forest, developing heart
information 2 » information 3
a developing » a development
karst areas » karstic areas, forest areas, thrust areas
der formen » der reformen, die formen, der form
costs a » costs _, costs 4
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 2 der formen communication costs a developing karst areas.*.