Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
network synthesis » network systems
sequence networks » frequency networks, sequential networks, influence networks
evidence network » science network, dence network, incidence networks
guidance network » guide network, finance network, impedance network
health evidence » health science
health sequence » health sequelae, heart sequence, health consequence
health guidance » health finance, health substance

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 synthesis report ) OR ( health sequence networks synthesis report ))) OR ( health guidance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (((( health evidence network synthesis report ) or ( health sequence networks synthesis report ))) or ( health guidance network synthesis report ))*.