Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » science network, incidence networks, resilience network
guidance network » guide network, finance network, impedance network
health evidence » health science
defence network » defense network, defenses network, defense networks
health guidance » health finance, health substance
health defence » health adherence, health reference, health terrence
dence network » dense network, dense networks, device network
health dence » health device, health science, health devices

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