Perhaps you should try some spelling variations:
personal communications » personal communication, interpersonal communications, internal communications
des informationsmasse » als informationsmass, i informationsmasse, ii informationsmasse
communications costs » communication costs, communications _
technologien des » technologien fur, technologien und, technologies 2
developing east » development east, developing a, developing asia
4 developing » 3 developing
east aezs » east asezs
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologien des informationsmasse _ a personal communications costs 4 developing east aezs.*.