Perhaps you should try some spelling variations:
shang john » change john, shang jin, shaw john
shang jen » shang jin
wing yan » wang yan, wing ian, wing tan
tuan hua » tuan vu, yuan hui
wong sam » wong sau, wong lai, von sam
tan hua » wang hua, tan chia, tan puay
sar » sara, star, saur

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

• Performing a fuzzy search may retrieve terms with similar spellings: wing yan ((tuan hua) or (tan hua)) ren ((shang john) OR (shang jen)) ((wong sam) or (kong sar)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((tuan hua) OR (tan hua)) ren ((shang john) OR (shang jen)) ((wong sam) OR (kong sar)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wing yan ((tuan hua) or (tan hua)) ren ((shang john) OR (shang jen)) ((wong sam) or (kong sar)) ;*".