Perhaps you should try some spelling variations:
der informationssystem » des informationssystems, das informationssystem, als informationssystem
informationssystem 2.3 » informationssysteme und, informationssystems _, information systems
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
2.3 non » 4.3 non, 5.3 non, 1.3 non

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

• Adding a wildcard symbol may retrieve word variants: technologien der informationssystem 2.3 non oral communication costs _ developing 2 african.*.