Perhaps you should try some spelling variations:
"health substance network synthesis report" » "health distance network synthesis report", "health substrate network synthesis report", "health resistance network synthesis report"
"health guidance network systems support" » "health guide network systems support", "health finance network systems support", "health impedance network systems support", "health guidance network system support", "health guidance network systems supporting", "health guidance network system supporting"
"health evidence network systems recent" » "health science network systems recent", "health dence network systems recent", "health incidence networks systems recent"

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 guidance network systems support") OR ("health evidence network systems recent"))) OR ("health substance network synthesis report")).
• Removing quotes may allow a broader search: (((( health guidance network systems support ) or ( health evidence network systems recent ))) or ( health substance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (((("health guidance network systems support") or ("health evidence network systems recent"))) or ("health substance network synthesis report"))*.