Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
technologien als » technologien des, technologien fur, technologien und
a communications » a communication, data communications, a communicative
als information » als informations, aids information, laws information
developing 1 » developing _, developing a, developing e
centers 1.3 » centers 3.3, centers 4.3, centers 12.4
1.3 a » 1.3 _, 2.3 a, 1.1 a

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

• Adding a wildcard symbol may retrieve word variants: technologien als information centers 1.3 a communications costs _ developing 1 africa.*.