Perhaps you should try some spelling variations:
"income and warning inequality" » "income and learning inequality", "income and widening inequality", "income and facing inequality"
"income and garding inequality" » "income and garding's inequality", "income and hardy inequality", "income and hardy's inequality"
"income and earnings inequality" » "income and learning inequality"

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: (((("income and warning inequality") OR ("income and earnings inequality"))) OR ("income and garding inequality")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"income and warning inequality\") OR (\"income and earnings inequality\"))) or (\"income and garding inequality\"))".
• Removing quotes may allow a broader search: (((( income and warning inequality ) OR ( income and earnings inequality ))) or ( income and garding inequality )).
• Adding a wildcard symbol may retrieve word variants: (((("income and warning inequality") OR ("income and earnings inequality"))) or ("income and garding inequality"))*.