Perhaps you should try some spelling variations:
chang boon » chang soon, cheng boon, chang won
boon chong » boon siong, joon chang
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
chong shu » cong shu, chong suk
jia shen » jian she
yi shen » yi chen, pui shen, wei shen

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 yang ((jia shen) or (yi shen)) chang boon chong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang ((jia shen) OR (yi shen)) chang boon chong shu ;.
• Adding a wildcard symbol may retrieve word variants: wang yang yang ((jia shen) or (yi shen)) chang boon chong shu ;*.