Perhaps you should try some spelling variations:
yang tran » nang trang, yang dean, tung tran
yang john » young john, king john, yang jin
john wong » john song, john bonn
yang fan » zhang fan, yang dean, yang yang
hua chen » yu chen, a chen, hua ren
jui chen » yi chen
wong sau » wong sam, wong siu, wong shiu

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yang tran) OR (yang fan)) ((hua chen) or (jui chen)) yang john wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yang tran) OR (yang fan)) ((hua chen) OR (jui chen)) yang john wong sau ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang tran) OR (yang fan)) ((hua chen) or (jui chen)) yang john wong sau ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yang tran) OR (yang fan)) ((hua chen) or (jui chen)) yang john wong sau ;*.