Perhaps you should try some spelling variations:
china chang » chin chang, china zhang, china changqi
chang wang » chang ann, chang won, hong wang
yang asia » dan asia, yang anda, lng asia
yang yao » yang yang, wang yan, yang yi
gang yao » wang yan, ganga ya, sang yoo
yang shu » cong shu, tan shu, yang hui
yang du » yang di, yang d, yang mu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yao) or (gang yao)) yang asia china chang wang ((yang shu) OR (yang du)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yao) OR (gang yao)) yang asia china chang wang ((yang shu) OR (yang du)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yao) or (gang yao)) yang asia china chang wang ((yang shu) OR (yang du)) ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yao) or (gang yao)) yang asia china chang wang ((yang shu) OR (yang du)) ;*.