Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technologies get » technologies art, technologies bit, technologies gmbh
get information » gets information, debt information, ct information
information a » information age, information about
development l » development li, development 1, development law
one voice » one price, new voice
l afrique » en afrique
a one » _ one
7.1 1 » 7.1 _, 4.1 1, 7.1 引
7.1 a » 2.1 a, 7.1 _, 3.1 a

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies get information a one voice communication ((7.1 1) OR (7.1 a)) development l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies get information a one voice communication ((7.1 1) OR (7.1 a)) development l afrique.*.