Perhaps you should try some spelling variations:
health assistance » health substance, cash assistance
"health evidence network synthesis report" » "health evidence network systems report", "health science network synthesis report", "health dence network synthesis report", "health incidence networks synthesis report"
"health guidance network synthesis report" » "health guidance network systems report", "health guide network synthesis report", "health finance network synthesis report", "health impedance network synthesis report", "health substance network synthesis report"
health distance » healthy distance, 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 guidance network synthesis report") OR ("((((health distance) OR (health assistance))) or (earth distance)) network synthesis report")))).
• Removing quotes may allow a broader search: (( health evidence network synthesis report ) or ((( health guidance network synthesis report ) or ( ((((health distance) OR (health assistance))) or (earth distance)) network synthesis report )))).
• Adding a wildcard symbol may retrieve word variants: (("health evidence network synthesis report") or ((("health guidance network synthesis report") or ("((((health distance) OR (health assistance))) or (earth distance)) network synthesis report"))))*.