Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
information centers » information contents, information officers
technologien als » technologien des, technologien fur, technologien und
developing karst » developing east, developing forest, developing heart
als information » als informations, aids information, laws information
a developing » a development
karst areas » karstic areas, forest areas, thrust areas
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologien als information centers _ verbal communication costs a developing karst areas.*.