Perhaps you should try some spelling variations:
network synthesis » network systems
health incidence » health incident, health science, health evidence
networks systems » network systems, networks system, networked systems
guidance network » finance network, impedance network, guided network
death incidence » beam incidence, growth incidence, dengue incidence
health guidance » health evidence, health finance, health substance
guide network » guided network, side network, inside network
wide network » side network, mode network, line 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 incidence) OR (death incidence)) networks systems recent ) OR ((( health guidance network synthesis report ) OR ( health ((guide network) OR (wide network)) synthesis report )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((health incidence) OR (death incidence)) networks systems recent ) or ((( health guidance network synthesis report ) or ( health ((guide network) or (wide network)) synthesis report ))))".
• Adding a wildcard symbol may retrieve word variants: (( ((health incidence) OR (death incidence)) networks systems recent ) or ((( health guidance network synthesis report ) or ( health ((guide network) or (wide network)) synthesis report ))))*.