Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
zhang amin » zhang pimin, zhang ming, zhang xin
amin hong » min hong, among hong, tin hong
tang yun » yang yun, chang yun, fang yuan
4 china » 2 china
wang 4 » wang _, wang 3, wang d
hong 7 » hong w, hong a, hong g

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tang yun) or (wang yan)) wang 4 china zhang amin hong 7 ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tang yun) OR (wang yan)) wang 4 china zhang amin hong 7 ;.
• Adding a wildcard symbol may retrieve word variants: ((tang yun) or (wang yan)) wang 4 china zhang amin hong 7 ;*.