Perhaps you should try some spelling variations:
joon chang » hoong chang, boon chong, jin chang
than china » han china, wuhan china, can china
tuan china » wuhan china, can china, taiwan china
yuan wang » yan wang, yuan kang, yuan chang
tan wong » tan hong, tan kong, tan yong
wong siu » wong shiu, kong siu, wong sau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yuan wang) or (joon chang)) ((than china) OR (tuan china)) ren (yan or yang) tan wong siu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yuan wang) OR (joon chang)) ((than china) OR (tuan china)) ren (yan OR yang) tan wong siu ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yuan wang) or (joon chang)) ((than china) OR (tuan china)) ren (yan or yang) tan wong siu ;".
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (joon chang)) ((than china) OR (tuan china)) ren (yan or yang) tan wong siu ;*.