Perhaps you should try some spelling variations:
chin chang » china chang, chain change, china zhang
wang zheng » tang zheng, wang zhenpo, fang sheng
hyoung gun » young eun
chang ann » chang min, chang won, chang yun
hyoung yu » kyoung yun, hong yu, young kyu
yang jie » yang jin, yang di, yang jui
yan je » han je

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang zheng ((yan je) or (yang jie)) chin chang ann ((hyoung yu) OR (hyoung gun)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang zheng ((yan je) OR (yang jie)) chin chang ann ((hyoung yu) OR (hyoung gun)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang zheng ((yan je) or (yang jie)) chin chang ann ((hyoung yu) OR (hyoung gun)) ;*".