Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologien am » technologien im, technologien als, technologie im
developing cpia » developing china, developing asia, developing cil
am information » guam information, palm information, crm information
how oral » how moral, how rural, how arab

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

• Adding a wildcard symbol may retrieve word variants: technologien am information costs how oral communication costs _ developing cpia africa.*.