Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
a developing » a development
developing 4 » developing _, developing a, developing e
e personal » de personal, 1 personal, 4 personal
4 areal » 4 real, _ areal, 2 areal
cost a » cost _, cost 4, cost 5
3.2 e » 3.2 el, 3.2 eq, 13.2 e

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

• Adding a wildcard symbol may retrieve word variants: technologien des information 3.2 e personal communication cost a developing 4 areal.*.