Perhaps you should try some spelling variations:
influence networks » inference networks, inference network, sequence networks
reference networks » inference networks, reference works, inference network
substance network » distance network, resistance network, distance networks
substrate network » subscribe networks, subscriber network, state network
health substrate » earth substrates, healing substrates, health state
guidance network » guide network, finance network, impedance network
health guidance » health evidence, health finance

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 ((influence networks) OR (reference networks)) synthesis report ) OR ((((( health substance network synthesis report ) OR ( health substrate network synthesis report ))) OR ( health guidance network systems recent )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( health ((influence networks) OR (reference networks)) synthesis report ) or ((((( health substance network synthesis report ) or ( health substrate network synthesis report ))) or ( health guidance network systems recent ))))".
• Adding a wildcard symbol may retrieve word variants: (( health ((influence networks) OR (reference networks)) synthesis report ) or ((((( health substance network synthesis report ) or ( health substrate network synthesis report ))) or ( health guidance network systems recent ))))*.