Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
communication skills » communication services, communication systems
information smart » information mart, information part, information mary
developing cities » developing countries, developing annuities, developing economies
technologies 1 » technologies _, technologies 4, technologies 2
cities africa » societies africa, parties africa, rates africa
a developing » a development
11 optical » 12 optical, 14 optical, 1.13 optical
smart 11 » smart 1.3, smart 5.1, smart _
skills a » skills _, skills gap

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information smart 11 optical communication skills a developing cities africa.*.