Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
das communication » mass communication, c's communication, lea's communication
technologien ad » technologien am, technologien und, technologien als
developing east » development east, developing a, developing asia
ad information » d information, nd information, od information
15 developing » 1 developing, 5 developing, 10 developing
east africa » west africa
centers 3 » centers _, centers a, centers 3.3
cost 15 » cost 12, cost 5, cost 11.5
3 das » 1 das, 2 das

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 3 das communication cost 15 developing east africa.*.