Perhaps you should try some spelling variations:
oral communication » personal communication
information costs » information contents, information centers, information content
technologien und » technologie und, technologien des, technologien fur
developing based » development based, developing asia, developing east
und information » fund information, road information, award information
based areas » base areas, based areal, basic areas
debat oral » debat moral, debate moral, debat social

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

• Adding a wildcard symbol may retrieve word variants: technologien und information costs debat oral communication costs _ developing based areas.*.