Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
sequence networks » frequency networks, sequential networks, influence networks
network synthesis » network systems
evidence network » science network, guidance network, incidence networks
health sequence » health sequelae, heart sequence, health consequence
health guidance » health evidence, health finance
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 networks synthesis report ))) OR ( ((health guidance) OR (health substance)) 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 networks synthesis report ))) or ( ((health guidance) or (health substance)) network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (((( health ((evidence network) OR (dence network)) synthesis report ) or ( health sequence networks synthesis report ))) or ( ((health guidance) or (health substance)) network synthesis report ))*.