Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
zwang 3.2 » zwang 2.2
du zwang » der zwang, dem zwang, du yang
3.2 long » 3.2 land
long do » long d, long du, longer do
wang » wing, wan, lang
zwang » zwing, zwan, zlang
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 zwang 3.2 long do ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang yan) or (yang guang)) mah siew du zwang 3.2 long do ;*.