Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
technologies pt » technologies _, technologies 4, technologies 2
pt information » ct information, plot information, get information
le development » e development, ce development, le developpement
information a » information age, information about
de optical » _ optical, 3 optical, 12 optical
a afrique » l afrique, en afrique
costs le » costs _, costs 4, costs a
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies pt information a de optical communication costs le development a afrique.*.