Perhaps you should try some spelling variations:
der informationssystem » des informationssystems, das informationssystem, als informationssystem
informationssystem vs » informationssystems als, informationssystem 2.3, informationssystem 5.4
oral communication » personal communication
technologien der » technologien des, technologie der, technologien fur
developing 2 » developing _, developing a, developing e
2 african » _ african, 1 african
non oral » non oil, non arab

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

• Adding a wildcard symbol may retrieve word variants: technologien der informationssystem vs non oral communication costs _ developing 2 african.*.