Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
yihan guan » yan guan
thang long » change long
gene hong » eng hong
gene one » gene clone, gene gene, gene we
long sam » wong sam, long span, long arm
man 11 » can 11, man 21

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