Perhaps you should try some spelling variations:
yuan cheng » yuan chang, huang cheng, yu cheng
yan wang » yuan wang, yang yang, qian wang
gene one » gene clone, gene gene, gene we
how wong » how long, how hong, how wood
wong sau » wong sam, wong siu, wong shiu
liang i » liang li, liang _, liang wei
i gene » _ gene, a gene, e gene

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((yan wang) OR (yuan cheng)) liang i gene one how wong sau ;~.
• Adding a wildcard symbol may retrieve word variants: ((yan wang) or (yuan cheng)) liang i gene one how wong sau ;*.