Perhaps you should try some spelling variations:
chang won » chang soon, chang min, chang you
chang ann » chang min, chang yun, change annex
jeong shu » jeong su, cong shu
wang yao » wang yan, yang yao, gang yao
yao yang » yang yang
jia shen » jian she
yi shen » yi chen, pui shen, wei shen

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yao yang ((yi shen) or (jia shen)) ((chang won) OR (chang ann)) jeong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yao yang ((yi shen) OR (jia shen)) ((chang won) OR (chang ann)) jeong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yao yang ((yi shen) or (jia shen)) ((chang won) OR (chang ann)) jeong shu ;*".