Perhaps you should try some spelling variations:
substance network » distance network, resistance network, distance networks
substrate network » subscribe networks, subscriber network
evidence network » guidance network, dence network, incidence networks
science network » sciences network, science networks, science work
health science » health sciences
state network » state networks, aware network

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

• If you are trying to use Boolean operators, they must be ALL CAPS: "((((\"health evidence network systems recent\") or (\"health science network systems recent\"))) or (\"health ((substance network) OR (((substrate network) OR (state network)))) systems recent\"))*".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((((\\"health evidence network systems recent\\") or (\\"health science network systems recent\\"))) or (\\"health ((substance network) or (((substrate network) OR (state network)))) systems recent\\"))*\"".
• Removing quotes may allow a broader search: (((( health evidence network systems recent ) or ( health science network systems recent ))) or ( health ((substance network) or (((substrate network) OR (state network)))) systems recent ))*.