Perhaps you should try some spelling variations:
young choong » young change, young choi, young young
ch'ing hea » ching hea
choong wan » chong wan
yun kong » yun young, hyun song, tan kong
yun song » hyun song, yun young, jin song
nancy a » nancy n, nancy l, nancy m
nancy c » nancy n, nancy l

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nancy a) or (nancy c)) ch'ing hea ((yun kong) OR (yun song)) young choong wan ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nancy a) OR (nancy c)) ch'ing hea ((yun kong) OR (yun song)) young choong wan ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nancy a) or (nancy c)) ch'ing hea ((yun kong) OR (yun song)) young choong wan ;*".