Perhaps you should try some spelling variations:
deepening inequality » explaining inequality, measuring inequality, reducing inequality
warning inequality » learning inequality, widening inequality, facing inequality
garding inequality » garding's inequality, hardy inequality, rising inequality
hardy's inequality » hardy inequality, holder's inequality, harnack inequality
wage » wave
earnings » learning

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 ((warning inequality) OR (((((deepening inequality) OR (((garding inequality) OR (hardy's inequality))))) OR (earnings inequality)))).
• Adding a wildcard symbol may retrieve word variants: wage and ((warning inequality) or (((((deepening inequality) or (((garding inequality) or (hardy's inequality))))) or (earnings inequality))))*.