Perhaps you should try some spelling variations:
network synthesis » network systems
sequence network » sequence networks, science network, sequential network
health impedance » health importance, health temperance, head impedance
health sequence » health sequelae, heart sequence, health consequence
health science » health sciences

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