Perhaps you should try some spelling variations:
lang yan » wang yan, wang yang, zhang yan
hua gene » human gene, hua ren, hy5 gene
yang jui » yang judy, yang di, yang xi
yan ban » can bank, tan bann, wang ban
won sau » wong sau, wong sam, wong siu
a gene » a genre, a gender, a gentle
yan ji » yan jiu, ban ji, pan ji

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang yan ban ((hua gene) or (a gene)) ((yan ji) or (yang jui)) won sau ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang yan ban ((hua gene) OR (a gene)) ((yan ji) OR (yang jui)) won sau ;*.