Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health evidence network systems report", "health dence network synthesis report", "health incidence networks synthesis report", "health resilience network synthesis report"
"Health science network synthesis report" » "Health science network systems report", "Health science networks synthesis report", "Health science work synthesis report", "Health sequence networks synthesis report"
"Health sciences network synthesis report" » "Health sciences network systems 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 substance network synthesis report"
health sciences » earth sciences

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 science network synthesis report") OR ("Health sciences 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 science network synthesis report\") OR (\"Health sciences network synthesis report\"))))) or (\"health guidance network synthesis report\"))".
• Removing quotes may allow a broader search: (((( health evidence network synthesis report ) or ((( Health science network synthesis report ) OR ( Health sciences network synthesis report ))))) or ( health guidance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (((("health evidence network synthesis report") or ((("Health science network synthesis report") OR ("Health sciences network synthesis report"))))) or ("health guidance network synthesis report"))*.