Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
technologies co » technologies _, technologies 4, technologies 2
co information » do information, 2 information, 1 information
dead optical » dtam optical, leaf optical, dead political
about dead » about bad, about debt
a afrique » l afrique, en afrique
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies co information about dead optical communication costs a development a afrique.*.