Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health science network synthesis report", "health guidance network synthesis report", "health incidence networks synthesis report", "health evidense network synthesis report", "health evidefence network synthesis report", "health evidense networks synthesis report"
"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 devices » health device, health services, health service
"health dence network synthesis report" » "health dense network synthesis report", "health defence network synthesis report", "health dense networks synthesis report", "health device network synthesis report", "health science network synthesis report", "health degree network synthesis report"

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 dence network 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 evidence network synthesis report\") OR (\"health dence network 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 evidence network synthesis report ) OR ( health dence network synthesis report ))) or ( ((health dence) or (health devices)) network synthesis report ))) or ( health impedance network systems report ))*.