Perhaps you should try some spelling variations:
"public health" » "publicae health" (Expand Search), "republic health" (Expand Search)
"republicae health" » "republicaeae health" (Expand Search), "rerepublicae health" (Expand Search), "republica health" (Expand Search), "publicae health" (Expand Search), "republic health" (Expand Search)
"republicaeae health" » "republicaeaeae health" (Expand Search), "rerepublicaeae health" (Expand Search), "republicaae health" (Expand Search), "publicaeae health" (Expand Search), "republicae health" (Expand Search), "republica health" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"public health\") OR (((\"republicae health\") OR (\"republicaeae health\"))))~".
• Removing quotes may allow a broader search: (( public health ) OR ((( republicae health ) OR ( republicaeae health ))))~.
• Adding a wildcard symbol may retrieve word variants: (("public health") OR ((("republicae health") OR ("republicaeae health"))))*.