Perhaps you should try some spelling variations:
china chang » china zhang, china changqi, china china
chin chang » chain change, china zhang, colin chang
lung can » hung cam
yang jie » yang jin, yang di, yang yi
yang jui » yang judy, yang di, yang yi
tong hui » wang hui
yang xi » yang di, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: lung can ((chin chang) or (china chang)) ha ((((yang jie) OR (yang jui))) or (yang xi)) tong hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lung can ((chin chang) OR (china chang)) ha ((((yang jie) OR (yang jui))) OR (yang xi)) tong hui ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lung can ((chin chang) or (china chang)) ha ((((yang jie) OR (yang jui))) or (yang xi)) tong hui ;*".