Perhaps you should try some spelling variations:
oral communication » personal communication
information case » information based, information can, information costs
developing based » development based, developing asia, developing east
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
a developing » a development
based areas » base areas, based areal, basic areas
case des » cases des, case das, phase des
des oral » des moral, des oil, des orts
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 ad information case des oral communication costs a developing based areas.*.