Perhaps you should try some spelling variations:
hoong chang » hoong ang, huang chang, joon chang
peng liang » wang liang, yang liang, deng ziliang
yang yang » wang yang, wang yan
long way » wrong way
long arm » long term
a1 gene » a gene, 11 gene, l1 gene
1 gene » 11 gene, l1 gene, _ 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: ((peng liang) OR (yang yang)) tan ((a1 gene) OR (1 gene)) hoong chang ((long way) OR (long arm)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((peng liang) or (yang yang)) tan ((a1 gene) OR (1 gene)) hoong chang ((long way) or (long arm)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((peng liang) or (yang yang)) tan ((a1 gene) OR (1 gene)) hoong chang ((long way) or (long arm)) ;*.