Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
wang yang » wang yan, wang liang, wang yanling
wei guang » wei shang, wei qiang, fei huang
pei gang » pei yang, ii gang, den gang
der gang » der umgang
3 long » a long, 2 long, 3.2 long
long d » long do, long du, 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 (yang guang)) mah siew ((((pei gang) OR (wei guang))) OR (der gang)) 3 long d ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (yang guang)) mah siew ((((pei gang) OR (wei guang))) or (der gang)) 3 long d ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yang) or (yang guang)) mah siew ((((pei gang) OR (wei guang))) or (der gang)) 3 long d ;*.