Perhaps you should try some spelling variations:
"health assistance network systems supporting" » "health assistance networked systems supporting", "health resistance network systems supporting", "health assistant network systems supporting", "health assistance network system support", "health substance network systems supporting", "cash assistance network systems supporting"
"health assurance network systems supporting" » "health assurance network system support", "health assurance author systems supporting", "health assurance between systems supporting", "health distance network systems supporting", "health reassurance network systems supporting", "health insurance network systems supporting", "health insurances network systems supporting"
"health evidence network synthesis report" » "health science network synthesis report", "health guidance network synthesis report", "health dence network synthesis report"

Try widening your search to All Fields.

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