Perhaps you should try some spelling variations:
optical communications » optic communication, political communication, digital communications
communications costs » communication costs, communications _
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
der optical » der optimale, der optimalen, depth optical
a afrique » l afrique, en afrique
costs le » costs _, costs 4, costs a
a der » _ der, 2 der, 3 der

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 der optical communications costs le development a afrique.*.