Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
communication skills » communication services, communication systems
au developpement » du developpement, de developpement, le developpement
information 1.2 » information 1.5.2, information 2
12 optical » 12 optimal, 14 optical, 1.2 optimal
des africa » does africa, yes africa, de africa
skills au » skills a, skills gap, skills can
1.2 12 » 4.2 12

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 1.2 12 optical communication skills au developpement des africa.*.