Perhaps you should try some spelling variations:
deepening inequality » explaining inequality, earnings inequality, reducing inequality
measuring inequality » measuring quality
learning inequality » earnings inequality, learning quality, reducing inequality
garding inequality » garding's inequality, earnings inequality, hardy inequality
wage » wave

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: wage AND ((((deepening inequality) OR (measuring inequality))) OR (((garding inequality) OR (learning inequality)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "wage and ((((deepening inequality) OR (measuring inequality))) or (((garding inequality) or (learning inequality))))".
• Adding a wildcard symbol may retrieve word variants: wage and ((((deepening inequality) OR (measuring inequality))) or (((garding inequality) or (learning inequality))))*.