Perhaps you should try some spelling variations:
hyoung yang » kyoung yang
than change » chain change, can change, mean change
han change » can change, han chang, chain change
shang hai » shang kai, dang hai, chang ha
yang xi » yang di, yang yi, yang jui
hong yu » wong yue
wang » wing, wan, lang

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: wang hyoung yang xi ((han change) OR (than change)) work ((shang hai) OR (hong yu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang hyoung yang xi ((han change) OR (than change)) work ((shang hai) or (hong yu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang hyoung yang xi ((han change) OR (than change)) work ((shang hai) or (hong yu)) ;*.