Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologien und » technologie und, technologien des, technologien fur
dc communication » de communication, ec communication, atc communication
und information » fund information, road information, award information
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
contents je » contents key, contents 1, contents _
cost 5.4 » costs 5.4, cost 2.4, cost 3.4

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

• Adding a wildcard symbol may retrieve word variants: technologien und information contents je dc communication cost 5.4 developing _ africa.*.