Perhaps you should try some spelling variations:
communication costa » communication costs, communications costs, communication cote
technologies uses » technologies used, technologies based, technological uses
uses information » users information, user information, use information
de communication » mobile communication, online communication
developing east » development east, developing a, developing asia
contents 4.1 » contents 3.1, contexts 4.1, contents 5.1
4 developing » 3 developing
east africa » west africa
costa 4 » cost 4, costa e, costa 3
4.1 de » 4.1 die, 4.1 der, 4.1 den

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

• Adding a wildcard symbol may retrieve word variants: technologies uses information contents 4.1 de communication costa 4 developing east africa.*.