Perhaps you should try some spelling variations:
technologien system » technological system, technology system, technological systems
system information » systems information, system formation, systeme d'information
oral communication » personal communication
information costs » information contents, information centers, information content
developing cpia » developing china, developing asia, developing cil
a developing » a development
how oral » how moral, how rural, how arab
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 system information costs how oral communication costs a developing cpia africa.*.