Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
gene hong » eng hong, gene one
hong than » hong tan, long thanh, hong hai
yang lin » yang jin, wang lin, yang li
wong sau » wong sam, wong shiu, wong lai
wong siu » wong shiu, kong siu, wong siew
yang l1 » yang li, yang all

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 ((yang l1) OR (yang lin)) gene hong than ((wong sau) or (wong siu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yuan wang ((yang l1) OR (yang lin)) gene hong than ((wong sau) OR (wong siu)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan wang ((yang l1) OR (yang lin)) gene hong than ((wong sau) or (wong siu)) ;*".