Perhaps you should try some spelling variations:
"Health policy targets" » "Health policy target"
"health policy series" » "health policy services", "health policy server", "health policy serge"
"Health policy takers" » "Health policy makers", "Health policy maker's", "Health policy maker"

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 policy series") OR ((("Health policy targets") OR ("Health policy takers")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"health policy series\") or (((\"Health policy targets\") OR (\"Health policy takers\"))))".
• Removing quotes may allow a broader search: (( health policy series ) or ((( Health policy targets ) OR ( Health policy takers )))).
• Adding a wildcard symbol may retrieve word variants: (("health policy series") or ((("Health policy targets") OR ("Health policy takers"))))*.