Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » science network, guidance network, dence network
health guidance » health substance
health science » health sciences
heart sequence » heart sequences, charts sequence, header sequence
health finance » health financing, health insurance

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) OR (heart sequence)) network synthesis report ))) OR ( ((health guidance) OR (health finance)) network synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( health evidence network synthesis report ) or ( ((health science) or (heart sequence)) network synthesis report ))) or ( ((health guidance) OR (health finance)) network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (((( health evidence network synthesis report ) or ( ((health science) or (heart sequence)) network synthesis report ))) or ( ((health guidance) OR (health finance)) network synthesis report ))*.