Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien dis » technologien des, technologien als, technologien im
de communication » mobile communication, online communication
dis information » mis information, aids information, des informations
3.3 developing » 4 developing, 2 developing, 1 developing
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
3.2 why » 1.2 why, 2.2 why, 8.2 why
why de » why do, why does, why code

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

• Adding a wildcard symbol may retrieve word variants: technologien dis information 3.2 why de communication cost 3.3 developing _ access.*.