Perhaps you should try some spelling variations:
garding's inequality » hardy's inequality, young's inequality, korn's inequality
garding inequality » hardy inequality, hardy's inequality, rising inequality
earnings » learning, warning

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