Perhaps you should try some spelling variations:
"wage and learning inequality" » "wage and earnings inequality", "wage and learning quality", "wage and measuring inequality"
"wage and garding inequality" » "wage and garding's inequality", "wage and earnings inequality", "wage and hardy inequality"

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 learning inequality")).
• Removing quotes may allow a broader search: (( wage and garding inequality ) or ( wage and learning inequality )).
• Adding a wildcard symbol may retrieve word variants: (("wage and garding inequality") or ("wage and learning inequality"))*.