Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
debt communications » debt communication, guest communications, data communications
developing joint » developing coping, development joint, developing ict
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
centers 1 » centers 10, centers 21, centers _
costs 5.4 » costs 4.4, costs 6.4, costs 2.4
1 debt » 3 debt, 4 debt

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information centers 1 debt communications costs 5.4 developing joint africa.*.