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 guided network synthesis report", "health evidence network synthesis report", "health substance network synthesis report"
"health impedance network synthesis report" » "health impedance network systems report", "health importance network synthesis report", "health temperance network synthesis report", "head impedance network synthesis report"
health incidence » death incidence, health incident, health evidence
health science » health sciences

Try widening your search to All Fields.

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 incidence) or (health science)) networks synthesis report") OR ((("health guidance network synthesis report") OR ("health impedance network synthesis report")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"((health incidence) or (health science)) networks synthesis report\") or (((\"health guidance network synthesis report\") OR (\"health impedance network synthesis report\"))))".
• Removing quotes may allow a broader search: (( ((health incidence) or (health science)) networks synthesis report ) or ((( health guidance network synthesis report ) OR ( health impedance network synthesis report )))).
• Adding a wildcard symbol may retrieve word variants: (("((health incidence) or (health science)) networks synthesis report") or ((("health guidance network synthesis report") OR ("health impedance network synthesis report"))))*.