Perhaps you should try some spelling variations:
dong hoang » hong hong
wang yang » wang yan, wang liang, wang yanling
yang john » young john, king john, yang jin
john wong » john song, john bonn
wong shiu » wong siu, cong shu, song shin
dan yang » daun yang, tan yang, yang yang
hua dan » hua ban
ka hua » ya hua, ka chuan

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) or (dong hoang)) ka hua dan yang john wong shiu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (dong hoang)) ka hua dan yang john wong shiu ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (dong hoang)) ka hua dan yang john wong shiu ;*.