Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
chih zheng » chen zheng, chih hang
zheng rong » chen rong
yang dang » yang yang, yang liang, yang dean
hadi chih » hai chih
chong shu » cong shu
chong suk » chong yun, cong sun, yong suk

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 ((yang dang) OR (yang guang)) hadi chih zheng rong ((chong shu) OR (chong suk)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang ((yang dang) OR (yang guang)) hadi chih zheng rong ((chong shu) or (chong suk)) ;~".
• Adding a wildcard symbol may retrieve word variants: yang ((yang dang) OR (yang guang)) hadi chih zheng rong ((chong shu) or (chong suk)) ;*.