Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
technologies idds » technologies icts, technologies index, technologies iv
idds information » ids information, aids information, dis 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 idds information a de optical communication costs le development a afrique.*.