Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health evidence network systems report", "health science network synthesis report", "health guidance network synthesis report", "health dence network synthesis report"
healthy districts » health districts, health district
healthy distance » health assistance, health resistance, health substance
health distance » health assistance, health resistance, health substance
earth distance » search distance, path distance, garch distance

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 distance) OR (earth distance))) or (((healthy distance) or (healthy districts)))) network synthesis report")).
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ( ((((health distance) OR (earth distance))) or (((healthy distance) or (healthy districts)))) network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (("health evidence network synthesis report") or ("((((health distance) OR (earth distance))) or (((healthy distance) or (healthy districts)))) network synthesis report"))*.