Perhaps you should try some spelling variations:
than change » chain change, can change, mean change
yang guang » yang yang, yan guan
yang liang » wang liang, yan liang, yang yang
han chang » huang chang, can change, chin chang
min jeong » kin keong, min hong, mun leong
jeong shu » jeong su, cong shu

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((yang guang) OR (yang liang)) jun ((han chang) or (than change)) min jeong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((yang guang) OR (yang liang)) jun ((han chang) OR (than change)) min jeong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang ((yang guang) OR (yang liang)) jun ((han chang) or (than change)) min jeong shu ;*".