Perhaps you should try some spelling variations:
boon chong » boon siong, joon chang
yang boon » ong boon
chong won » chang won, chong wan, choong wan
dang hadi » dang hai
won chen » don chen, wong chun, goh chen
yang jin » yang jie, yang jun, ying jin
yang jui » yang judy, yang xi
yang yi » yang xi

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang boon chong won chen ((yang jin) OR (((((yang yi) OR (yang jui))) OR (yang di)))) dang hadi ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang boon chong won chen ((yang jin) OR (((((yang yi) OR (yang jui))) OR (yang di)))) dang hadi ;*".