Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
"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"
health influence » death influence, earth influence, hemath influence
heart influence » secret influence, impact 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 influence) OR (heart influence)) networks synthesis report") OR ("health guidance network synthesis report")).
• Removing quotes may allow a broader search: (( ((health influence) OR (heart influence)) networks synthesis report ) or ( health guidance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (("((health influence) OR (heart influence)) networks synthesis report") or ("health guidance network synthesis report"))*.