Perhaps you should try some spelling variations:
oral communication » personal communication
information case » information based, information can, information costs
development task » development tasks, development talk, developmental task
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
task arenas » task_arenas _
case a » case 1, case 2, case 3
a oral » _ oral, 2 oral, 4 oral

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 a oral communication costs _ development task arenas.*.