Perhaps you should try some spelling variations:
zhang jian » zhang fan, shang jin
zhang yan » zhang fan, wang yan
yang john » young john, king john, yang jin
john wong » john song, john bonn
tuan hua » tuan vu, yuan hui
wong sau » wong sam, wong siu, wong shiu
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: ((zhang yan) OR (zhang jian)) ((tan hua) or (tuan hua)) rene yang john wong sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((zhang yan) OR (zhang jian)) ((tan hua) OR (tuan hua)) rene yang john wong sau ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((zhang yan) OR (zhang jian)) ((tan hua) or (tuan hua)) rene yang john wong sau ;*".