Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
based information » basic information, based innovation, land information
de communication » mobile communication, online communication
developing human » development human, developing a, developing asia
contents since » context since, contents index
2 developing » 3 developing, 4 developing, 2 development
human africa » roman africa, urban africa, can africa
since de » since ce, science de, prince de
cost 2 » cost 12, cost _, cost 4

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

• Adding a wildcard symbol may retrieve word variants: technology based information contents since de communication cost 2 developing human africa.*.