Perhaps you should try some spelling variations:
"health impedance network systems report" » "health importance network systems report", "health temperance network systems report", "head impedance network systems report", "health impedance network system report", "health impedance network systems support", "health impedance network systems recent"
"health science network synthesis report" » "health sciences network synthesis report", "health science networks synthesis report", "health sequence networks synthesis report", "health science networld synthesis report", "health science netwalk synthesis report", "health science netshock synthesis report"
"health science work synthesis report" » "health sciences work synthesis report", "health science world synthesis report", "health science walk synthesis report", "health science shock synthesis report", "health science works synthesis report", "health science where synthesis report"
health devices » health device, health services, health service
health dence » health device, health evidence, health degree

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 science network synthesis report") OR ("health science work synthesis report"))) OR ("((health dence) or (health devices)) network synthesis report"))) OR ("health impedance network systems report")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"health science network synthesis report\") OR (\"health science work synthesis report\"))) or (\"((health dence) or (health devices)) network synthesis report\"))) or (\"health impedance network systems report\"))".
• Removing quotes may allow a broader search: (((((( health science network synthesis report ) OR ( health science work synthesis report ))) or ( ((health dence) or (health devices)) network synthesis report ))) or ( health impedance network systems report )).
• Adding a wildcard symbol may retrieve word variants: (((((("health science network synthesis report") OR ("health science work synthesis report"))) or ("((health dence) or (health devices)) network synthesis report"))) or ("health impedance network systems report"))*.