Perhaps you should try some spelling variations:
verbal communication » nonverbal communication, virtual communication, oral communication
information costs » information contents, information centers, information content
developing areas » developing asia, developing east, developing a
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
areas access » farmers access, cartels access, markets access
des verbal » des verbalen, des verbs, models verbal
costs des » costs fees

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information costs des verbal communication costs _ developing areas access.*.