Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health science network synthesis report", "health guidance network synthesis report", "health dence network synthesis report"
"healthy distance network systems support" » "health assistance network systems support", "health resistance network systems support", "healthy districts network systems support", "healthy distance networks systems support", "healthy resistance network systems support", "healthy finance network systems support", "healthy distance network system support", "healthy distance network systems supporting", "healthy distance network system supporting"
"healthy disease network systems support" » "healthy disease network system support", "healthy disease network systems supporting", "healthy disease network system supporting", "healthy diseased network systems support", "health disease network systems support", "health diseases network systems support", "healthy dense network systems support"

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