Perhaps you should try some spelling variations:
communication net » communication new, communication neil, communication needs
trade development » software development
3 communication » 4 communication, de communication, data communication
development l » development li, development 1, development law
net trade » der trade
l afrique » en afrique

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 _ formulation ((4 does) OR (2 does)) 3 communication net trade development l afrique.~".
• Adding a wildcard symbol may retrieve word variants: technologies _ formulation ((4 does) OR (2 does)) 3 communication net trade development l afrique.*.