Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
die communication » de communication, time communication, une communication
developing urban » development urban, developing human, developing areas
technologies 2 » technologies _, technologies 4
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
contents 3.2 » content 3.2, contents 3.1, contexts 3.2
urban area » urban areas

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents 3.2 die communication cost 2.4 developing urban area.*.