Perhaps you should try some spelling variations:
technologien about » technologien auf, technologien fur, technologien als
oral communication » personal communication
about information » account information, labor information, about inflation
information costs » information contents, information centers, information content
developing urban » development urban, developing human, developing areas
4 developing » 3 developing
urban africa » urban area
how oral » how moral, how rural, how arab
costs 4 » costs _, costs a, costs 4.2

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologien about information costs how oral communication costs 4 developing urban africa.~.
• Adding a wildcard symbol may retrieve word variants: technologien about information costs how oral communication costs 4 developing urban africa.*.