Perhaps you should try some spelling variations:
hoong chang » hoong ang, huang chang, joon chang
yang guang » yang yang, yan guan, yang liang
hong thang » hong hong, hong tan, gung thang
guang yan » huang yang, wang yan, zhang yan
long sam » wong sam, long span, long arm
11 gene » 1 gene, l1 gene, 11 gender
a1 gene » a gene, 1 gene, l1 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: yang guang yan ((11 gene) OR (a1 gene)) ((hong thang) OR (hoong chang)) long sam ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang guang yan ((11 gene) OR (a1 gene)) ((hong thang) or (hoong chang)) long sam ;~".
• Adding a wildcard symbol may retrieve word variants: yang guang yan ((11 gene) OR (a1 gene)) ((hong thang) or (hoong chang)) long sam ;*.