Perhaps you should try some spelling variations:
learning inequality » learning quality, measuring inequality, deepening inequality
garding inequality » garding's inequality, rising inequality, housing inequality
hardy's inequality » holder's inequality, harnack inequality
facing inequality » falling inequality, hacking inequality, tracing inequality
hardy inequality » hardy inequalities, harnack inequality
wage » wave
earnings » 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 ((facing inequality) OR (((((learning inequality) OR (((((garding inequality) OR (hardy inequality))) OR (hardy's inequality))))) OR (earnings inequality)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "wage and ((facing inequality) or (((((learning inequality) or (((((garding inequality) OR (hardy inequality))) or (hardy's inequality))))) or (earnings inequality))))".
• Adding a wildcard symbol may retrieve word variants: wage and ((facing inequality) or (((((learning inequality) or (((((garding inequality) OR (hardy inequality))) or (hardy's inequality))))) or (earnings inequality))))*.