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

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 science network synthesis report"))) OR ("((health distance) or (((healthy distance) or (healthy districts)))) network synthesis report")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"health evidence network synthesis report\") OR (\"health science network synthesis report\"))) or (\"((health distance) or (((healthy distance) or (healthy districts)))) network synthesis report\"))".
• Removing quotes may allow a broader search: (((( health evidence network synthesis report ) OR ( health science network synthesis report ))) or ( ((health 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 science network synthesis report"))) or ("((health distance) or (((healthy distance) or (healthy districts)))) network synthesis report"))*.