Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
long do » longer do, long ago, long did
long du » long run, long did, long des
yang 3 » yang _, yang 8, gang 3
long d » long _, long 2, long a
wang » wing, wan, lang
mah » math
siew » view, sie

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 yan) OR (yang guang)) mah siew du yang 3 ((long do) OR (((long du) OR (long d)))) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yan) or (yang guang)) mah siew du yang 3 ((long do) or (((long du) OR (long d)))) ;~".
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (yang guang)) mah siew du yang 3 ((long do) or (((long du) OR (long d)))) ;*.