Perhaps you should try some spelling variations:
song thin » song shin, song jin, song min
pei yang » hui yang, pei yun, yi yang
wei yang » wei wang, wei yang's, wei shang
hua gene » human gene, a gene, hua ren
ying jin » yang jin, jing ji, yang jie
wong sam » wong sau, wong lai, kong sar
tan hua » tuan hua, wang hua, tan chia

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((pei yang) OR (wei yang)) tan hua gene ying jin ((wong sam) or (song thin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((pei yang) OR (wei yang)) tan hua gene ying jin ((wong sam) OR (song thin)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((pei yang) OR (wei yang)) tan hua gene ying jin ((wong sam) or (song thin)) ;*".