Perhaps you should try some spelling variations:
"health guidance network synthesis report" » "health guide network synthesis report", "health finance network synthesis report", "health guided network synthesis report", "health evidence network synthesis report", "health substance network synthesis report"
"health impedance network synthesis report" » "health importance network synthesis report", "health temperance network synthesis report", "head impedance network synthesis report"
"health distance network systems report" » "health distance networks systems report", "health resistance network systems report", "health disease network systems report", "healthy distance network systems report", "earth distance network systems report", "health assistance network systems report", "health distance network system report", "health distance network systems support", "health distance network systems recent"

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