Perhaps you should try some spelling variations:
network synthesis » network systems
sequence networks » frequency networks, sequential networks, influence networks
evidence network » science network, dence network, incidence networks
sequence network » science network, sequential network, recurrence network
guidance network » finance network, impedance network, guided network
health evidence » health science
guide network » guided network, side network, wide network

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