Perhaps you should try some spelling variations:
cheng zhang » cheng han, zhen zhang, china zhang
luong thanh » long thanh, truong thanh
chen zheng » chen zhen, chen aizheng, chen zhe
zhang ping » zhang ming, zhang jing, zhang ting
ping luong » ping pong, ling liong, qing long
kang » lang, wang, kong

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

• Performing a fuzzy search may retrieve terms with similar spellings: kang (miliann OR miliana) jane ((cheng zhang) or (chen zheng)) zhang ping luong thanh ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: kang (miliann OR miliana) jane ((cheng zhang) OR (chen zheng)) zhang ping luong thanh ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "kang (miliann OR miliana) jane ((cheng zhang) or (chen zheng)) zhang ping luong thanh ;".
• Adding a wildcard symbol may retrieve word variants: kang (miliann OR miliana) jane ((cheng zhang) or (chen zheng)) zhang ping luong thanh ;*.