Perhaps you should try some spelling variations:
wang zhiyong » wang shiyong, wang zhiqiong, wang heyong
zhiyong van » zhiyong fan, zhiyong jason
van thanh » tran thanh, phan thanh, lam thanh
shin cong » shen cong, shin dong, shin young
jae song » jae yong, jie song, jae young
kim song » kim young, kim eung

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang zhiyong van thanh ((jae song) or (kim song)) shin cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang zhiyong van thanh ((jae song) OR (kim song)) shin cong shu ;*.