Perhaps you should try some spelling variations:
china changqi » china shanghai, chin chang, china chanted
china chang » chin chang, china zhang, china china
wang cong » wang yong, wang hong, wang yang
wang yao » wang yan, yang yao, gang yao
yao yang » yang yang
yang jia » yang jie, yang jin, yang jing

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yao yang jia ((china chang) OR (china changqi)) wang cong shu ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yao yang jia ((china chang) OR (china changqi)) wang cong shu ;".
• Adding a wildcard symbol may retrieve word variants: wang yao yang jia ((china chang) OR (china changqi)) wang cong shu ;*.