Perhaps you should try some spelling variations:
"Health influence networks synthesis report" » "Health inference networks synthesis report", "Health inference network synthesis report", "Health reference networks synthesis report", "Health influence networks systems report", "Health influence nets synthesis report"
"health evidence network synthesis report" » "health evidence network systems report", "health science network synthesis report", "health dence network synthesis report", "health incidence networks 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 substance network synthesis report"
health influence » heart influence, death influence, earth influence

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("health evidence network synthesis report") OR ("Health influence networks synthesis report"))) OR ("health guidance network synthesis report")).
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