Perhaps you should try some spelling variations:
liang ying » liang liying, huang ying, zhang ying
hong thang » hoong chang, hong hong, hong tan
thang long » change long
liang yan » liang dan, liang tan, wang yan
long sam » wong sam, long span, long arm
a1 gene » a gene, 1 gene, l1 gene
11 gene » 1 gene, l1 gene, 11 gender

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 ((liang yan) OR (liang ying)) ((a1 gene) OR (11 gene)) hong thang long sam ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((liang yan) OR (liang ying)) ((a1 gene) or (11 gene)) hong thang long sam ;~".
• Adding a wildcard symbol may retrieve word variants: yang ((liang yan) OR (liang ying)) ((a1 gene) or (11 gene)) hong thang long sam ;*.