Perhaps you should try some spelling variations:
health incidence » health incident, health science, health evidence
death incidence » growth incidence, dengue incidence
networks system » network system, network systems, networked systems
system recent » systems recent
guide network » guided network, side network, inside network
wide network » side network, mode network, fine 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 system recent ) 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 system recent ) or ( health ((guide network) OR (wide network)) synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (( ((health incidence) or (death incidence)) networks system recent ) or ( health ((guide network) OR (wide network)) synthesis report ))*.