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

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 substance network systems report") OR ("health substance network systems transport"))) OR ("health substance network systems support")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"health evidence network synthesis report\") or (((((\"health substance network systems report\") OR (\"health substance network systems transport\"))) or (\"health substance network systems support\"))))".
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ((((( health substance network systems report ) OR ( health substance network systems transport ))) or ( health substance network systems support )))).
• Adding a wildcard symbol may retrieve word variants: (("health evidence network synthesis report") or ((((("health substance network systems report") OR ("health substance network systems transport"))) or ("health substance network systems support"))))*.