Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
"health dence network synthesis report" » "health dence network systems report", "health dense network synthesis report", "health defence network synthesis report", "health dense networks synthesis report", "health evidence network synthesis report", "health science network synthesis report", "health devices network synthesis report"
"health device network synthesis report" » "health device network systems report", "health service network synthesis report", "health service networks synthesis report", "health services network synthesis report"
"health guidance network synthesis report" » "health guidance network systems report", "health guide network synthesis report", "health finance network synthesis report", "health impedance network synthesis report", "health evidence network synthesis report", "health substance network synthesis report"
disease incidence » diseases incident
health incidence » health science, health evidence, path incidence
death incidence » growth incidence, dengue incidence
health incident » health including

Try widening your search to All Fields.

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 dence network synthesis report") OR ("health device network synthesis report"))) OR ("((((health incidence) or (((death incidence) or (disease incidence))))) or (health incident)) networks synthesis report"))) OR ("health guidance network synthesis report")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"health dence network synthesis report\") OR (\"health device network synthesis report\"))) or (\"((((health incidence) or (((death incidence) or (disease incidence))))) or (health incident)) networks synthesis report\"))) or (\"health guidance network synthesis report\"))".
• Removing quotes may allow a broader search: (((((( health dence network synthesis report ) OR ( health device network synthesis report ))) or ( ((((health incidence) or (((death incidence) or (disease incidence))))) or (health incident)) networks synthesis report ))) or ( health guidance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (((((("health dence network synthesis report") OR ("health device network synthesis report"))) or ("((((health incidence) or (((death incidence) or (disease incidence))))) or (health incident)) networks synthesis report"))) or ("health guidance network synthesis report"))*.