Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health science network synthesis report", "health dence network synthesis report", "health incidence networks synthesis report"
"health guidance network systems report" » "health guide network systems report", "health impedance network systems report", "health guided network systems report", "health substance network systems report", "health guidance network system report", "health guidance network systems support", "health guidance network systems recent"
"health finance network systems report" » "health financial network systems report", "health distance network systems report", "health finance work systems report", "health financing network systems report", "health insurance network systems report", "health finance network system report", "health finance network systems support", "health finance network systems recent"
health guided » health guide, health guido, health founded
hath guided » path guided, hath builded, paths guided

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 finance network systems report") OR ((("health guidance network systems report") OR ("((health guided) OR (hath guided)) network systems report")))))).
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ((( health finance network systems report ) or ((( health guidance network systems report ) or ( ((health guided) OR (hath guided)) network systems report )))))).
• Adding a wildcard symbol may retrieve word variants: (("health evidence network synthesis report") or ((("health finance network systems report") or ((("health guidance network systems report") or ("((health guided) OR (hath guided)) network systems report"))))))*.