Perhaps you should try some spelling variations:
huang chang » huang cheng, hoong chang, huang yang
huang jing » huang ting, huang ying, wang jing
rural wage » rural wages, rural water, rural base
han china » hang china, than china, can china
real wage » real wages
ban wong » ban nong
wong yue » wang yue, hong yu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((huang chang) or (huang jing)) han china ((rural wage) OR (real wage)) ban wong yue ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((huang chang) OR (huang jing)) han china ((rural wage) OR (real wage)) ban wong yue ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((huang chang) or (huang jing)) han china ((rural wage) OR (real wage)) ban wong yue ;*".