Perhaps you should try some spelling variations:
"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 guided network synthesis report"
"Health impedance network synthesis report" » "Health impedance network systems report"
health impedance » health importance, health temperance, head impedance
health guidance » health finance, health substance

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 guidance network synthesis report") OR ("Health impedance network synthesis report"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"health evidence network synthesis report\") or (((\"Health guidance network synthesis report\") OR (\"Health impedance network synthesis report\"))))*".
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ((( Health guidance network synthesis report ) OR ( Health impedance network synthesis report ))))*.