Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
wang yuhan » wang luhang, wang yidan, fang yuan
chang xin » zhang xin, chang min, chang ann
je china » je chin, ke china, use china
xin hong » tin hong, min hong, xie hong
wang je » wang he, wang ke, wang wei
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: ((wang yuhan) or (wang yan)) wang je china chang xin hong 7 ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yuhan) OR (wang yan)) wang je china chang xin hong 7 ;.
• Adding a wildcard symbol may retrieve word variants: ((wang yuhan) or (wang yan)) wang je china chang xin hong 7 ;*.