Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
die communication » de communication, time communication, une communication
developing urban » development urban, developing human, developing areas
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
technologies 2 » technologies _, technologies 4
centers 3.2 » centers 2.2, centers 3.3, centers 3.8
urban area » urban areas
cost 12.4 » coast 12.4, costs 12.4, cost 2.4

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information centers 3.2 die communication cost 12.4 developing urban area.*.