Perhaps you should try some spelling variations:
health assistance » health substance, cash assistance
"health evidence network systems recent" » "health science network systems recent", "health guidance network systems recent", "health dence network systems recent"
healthy distance » health resistance, healthy districts, health substance
health distance » earth distance, health resistance, health substance

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