Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications costs » communication costs, communications _
information impact » information import, information act, information space
technologies 1 » technologies _, technologies 4, technologies 2
e development » sme development, mine development, site development
3 optical » _ optical, 3 optimal, 3.3 optical
a afrique » l afrique, en afrique
impact 3 » impact _, impact 5
costs e » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information impact 3 optical communications costs e development a afrique.*.