Perhaps you should try some spelling variations:
klang als » klang amp, zwang als
best book » test book, best foot, best boy
yang jin » yang jie, yang jun, ying jin
jeong su » jeong _, jeong mi, jeong 情
rong su » rong yu, cong sun, yong suk
book i » book _, book 2, book 1
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) yan ((klang als) or (yang jin)) best book i ((rong su) OR (jeong su)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) yan ((klang als) OR (yang jin)) best book i ((rong su) OR (jeong su)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) yan ((klang als) or (yang jin)) best book i ((rong su) OR (jeong su)) ;*".