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

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) OR (sciences network)) systems recent\"))) or (\"health ((substance network) OR (substrate 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) OR (sciences network)) systems recent\\"))) or (\\"health ((substance network) or (substrate network)) systems recent\\"))*\"".
• Removing quotes may allow a broader search: (((( health evidence network systems recent ) or ( health ((science network) OR (sciences network)) systems recent ))) or ( health ((substance network) or (substrate network)) systems recent ))*.