Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
information act » information age, information a, information about
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
4 development » 2 development, 4 developing
de optical » _ optical, 3 optical, 12 optical
a afrique » l afrique, en afrique
costs 4 » costs _, costs a, costs 4.2
act de » act der, pact de, act does

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

• Adding a wildcard symbol may retrieve word variants: technologies a information act de optical communication costs 4 development a afrique.*.