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", "heart influence networks synthesis report", "death influence networks synthesis report", "earth influence networks synthesis report"
"health guidance network systems report" » "health guide network systems report", "health finance network systems report", "health impedance network systems report", "health evidence network systems report", "health substance network systems report", "health guidance network system report", "health guidance network systems recent", "health guidance network systems transport"
"health guidance network systems support" » "health guide network systems support", "health finance network systems support", "health impedance network systems support", "health evidence network systems support", "health substance network systems support", "health guidance network system support", "health guidance network systems supporting", "health guidance network system supporting"
health sciences » earth sciences
health dence » health device, health evidence, health science

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("health influence networks synthesis report") OR ("((health dence) or (health sciences)) network synthesis report"))) OR ((("health guidance network systems report") OR ("health guidance network systems support")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"health influence networks synthesis report\") or (\"((health dence) or (health sciences)) network synthesis report\"))) or (((\"health guidance network systems report\") OR (\"health guidance network systems support\"))))".
• Removing quotes may allow a broader search: (((( health influence networks synthesis report ) or ( ((health dence) or (health sciences)) network synthesis report ))) or ((( health guidance network systems report ) OR ( health guidance network systems support )))).
• Adding a wildcard symbol may retrieve word variants: (((("health influence networks synthesis report") or ("((health dence) or (health sciences)) network synthesis report"))) or ((("health guidance network systems report") OR ("health guidance network systems support"))))*.