Perhaps you should try some spelling variations:
shang john » change john, shang jin, shang jen
ren shang » wei shang, rent sharing
john wong » john song, john bonn
wing yan » wang yan, wing ian, wing tan
tuan hua » tuan vu, yuan hui
wong sam » wong sau, wong lai, kong sar
tan hua » wang hua, tan chia, tan puay

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 wong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wing yan ((tuan hua) OR (tan hua)) ren shang john wong sam ;*.