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
information act » information age, information a, information about
pt information » ct information, plot information, get information
der optical » der optimale, der optimalen, depth optical
a afrique » l afrique, en afrique
act der » act does

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

• Adding a wildcard symbol may retrieve word variants: technologies pt information act der optical communications costs _ development a afrique.*.