Perhaps you should try some spelling variations:
long thanh » luong thanh, long han, long trinh
guan wang » yuan wang, qian wang, yan wang
gene long » gene clone, gene one
yan guan » gan guan, yan yuan, yang guang
hua gene » human gene, a gene, hua ren
mung sau » wong sau
aung » lung, dung, jung

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

• Performing a fuzzy search may retrieve terms with similar spellings: yan guan wang hua gene long thanh ((mung sau) or (aung san)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yan guan wang hua gene long thanh ((mung sau) OR (aung san)) ;.
• Adding a wildcard symbol may retrieve word variants: yan guan wang hua gene long thanh ((mung sau) or (aung san)) ;*.