Perhaps you should try some spelling variations:
"health importance network synthesis report" » "health important network synthesis report", "health impedance network synthesis report", "health impededance network synthesis report", "health insurance network synthesis report"
"health evidence network systems transport" » "health evidence network systems transportation", "health science network systems transport", "health guidance network systems transport", "health incidence networks systems transport", "health evidefence network systems transport", "health evidense networks systems transport", "health evidevice network systems transport"
"health dence network systems recent" » "health defence network systems recent", "health dense networks systems recent", "health device network systems recent", "health science network systems recent", "health devices network systems recent"
"health dense network systems recent" » "health dense networks systems recent", "healthy sense network systems recent", "health disease network systems recent", "health device network systems recent"

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