Perhaps you should try some spelling variations:
"poor childrens health" » "poor children's health", "poor child health", "poor childhood health", "our children health", "our children's health"
"poor children healthy" » "poor children's health", "poor child health", "poor children early", "poor children's healthy", "poor child healthy", "poor chile healthy"
"poor children health" » "poor children's health", "poor child health", "poor chile health"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("poor children health") OR ("poor childrens health"))) or ("poor children healthy"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("poor children health") OR ("poor childrens health"))) OR ("poor children healthy")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"poor children health\") OR (\"poor childrens health\"))) or (\"poor children healthy\"))".
• Removing quotes may allow a broader search: (((( poor children health ) OR ( poor childrens health ))) or ( poor children healthy )).
• Adding a wildcard symbol may retrieve word variants: (((("poor children health") OR ("poor childrens health"))) or ("poor children healthy"))*.