Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
technologies 2 » technologies _, technologies 4
information 3 » information 2
development l » development li, development 1, development law
one voice » one price, new voice
l afrique » en afrique
3 one » _ one, a one
7.5 1 » 7.5 a, 7.5 9, 7.5 k

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

• Performing a fuzzy search may retrieve terms with similar spellings: technologies 2 information 3 one voice communication ((7.5 1) OR (7.5 _)) development l afrique.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "technologies 2 information 3 one voice communication ((7.5 1) OR (7.5 _)) development l afrique.*".