Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » science network, guidance network, incidence networks
sequence network » sequence networks, science network, sequential network
health impedance » health importance, health temperance, head impedance
health sequence » health sequelae, heart sequence, health consequence
dence network » dense network, defence network, dense 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) OR (dence network)) synthesis report ) OR ( health sequence network synthesis report ))) OR ( health impedance network synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( health ((evidence network) OR (dence network)) synthesis report ) or ( health sequence network synthesis report ))) or ( health impedance network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (((( health ((evidence network) OR (dence network)) synthesis report ) or ( health sequence network synthesis report ))) or ( health impedance network synthesis report ))*.