Perhaps you should try some spelling variations:
did china » did china's
qiao yang » xiao yang, yao yang, jiao yan
chang hai » chang ha, shang hai, change has
qian yan » qian jun, qian yi
di china » ii china, d china, iii china
hai cong » pham cong, bai chong, hai phong
i china » ii china, 2 china, 4 china
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((qiao yang) or (qian yan)) ((((di china) OR (i china))) or (did china)) chang hai cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((qiao yang) OR (qian yan)) ((((di china) OR (i china))) OR (did china)) chang hai cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((qiao yang) or (qian yan)) ((((di china) OR (i china))) or (did china)) chang hai cong shu ;*".