Perhaps you should try some spelling variations:
"health assistance network systems report" » "health assistance networked systems report", "health resistance network systems report", "health assistant network systems report", "health substance network systems report", "cash assistance network systems report", "health assistance network system report", "health assistance network systems recent", "health assistance network systems transport"
"health assistance network systems support" » "health assistance networked systems support", "health resistance network systems support", "health assistant network systems support", "health substance network systems support", "cash assistance network systems support", "health assistance network system support", "health assistance network systems supporting", "health assistance 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 assistance network systems report") OR ("health assistance network systems support")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"health evidence network synthesis report\") or (((\"health assistance network systems report\") OR (\"health assistance network systems support\"))))".
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ((( health assistance network systems report ) OR ( health assistance network systems support )))).
• Adding a wildcard symbol may retrieve word variants: (("health evidence network synthesis report") or ((("health assistance network systems report") OR ("health assistance network systems support"))))*.