Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health science network synthesis report", "health dence network synthesis report", "health incidence networks synthesis report"
"Health guidance network systems support" » "Health guide network systems support", "Health finance network systems support", "Health science network systems support", "Health guidance network system support", "Health guidance network systems supporting", "Health guidance network system supporting"
"health impedance network synthesis report" » "health importance network synthesis report", "health temperance network synthesis report", "head impedance network synthesis report"
health guidance » health finance, health substance
"Health guided network systems support" » "Health guided network system support", "Health guided network systems supporting", "Health guided network system supporting"
health guided » health guide, hath guided, health guido

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 systems support") OR ("Health guided network systems support"))) 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 systems support\") OR (\"Health guided network systems support\"))) or (\"health impedance network synthesis report\"))))*".
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ((((( Health guidance network systems support ) OR ( Health guided network systems support ))) or ( health impedance network synthesis report ))))*.