Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
wang yang » wang liang, wang yanling
wei guang » wei shang, wei qiang, fei huang
siew wei » siew hai, siew ee, tien wei
guang 3 » gang 3, guang eu, zugang 3
long do » long d, long du, longer do
3 long » a long, 2 long, 3.2 long
mah » math

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: ((((wang yang) OR (wang yan))) OR (yang guang)) mah siew wei guang 3 long do ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wang yang) or (wang yan))) or (yang guang)) mah siew wei guang 3 long do ;*.