Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
technologien als » technologien des, technologien fur, technologien und
als information » als informations, aids information, laws information
developing all » developing halal, developing small, developing a
information 2 » information 3
3 developing » 3 development
all accessed » last accessed, who accessed
2.1 device » 2.1 service, 2 device
costs 3 » costs _, costs 4, costs a
2 2.1 » b 2.1, _ 2.1, a 2.1

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

• Adding a wildcard symbol may retrieve word variants: technologien als information 2 2.1 device communication costs 3 developing all accessed.*.