Perhaps you should try some spelling variations:
xiaobo zhang » xiao zhang, xiaobo wang, xiaotong zhang
xiabo zhang » xiao zhang
hyoung yan » kyoung yang, hyoung gun, kyoung yun
gain zhang » bin zhang, yan zhang, gain sharing
guan gain » run gain
yan guan » gan guan, yan yuan, yang guang
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) hyoung yan guan gain zhang ((xiaobo zhang) OR (xiabo zhang)) hay ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) hyoung yan guan gain zhang ((xiaobo zhang) OR (xiabo zhang)) hay ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) hyoung yan guan gain zhang ((xiaobo zhang) OR (xiabo zhang)) hay ;*".