Perhaps you should try some spelling variations:
wang zhiyong » wang zhiqiong, wang heyong, zheng zhiyong
wang shiyong » wang hyoung
van thanh » tran thanh, phan thanh, lam thanh
shin cong » shen cong, shin dong, shin young
jae song » jae yong, jae young, a song
jie song » jin song, kim song, li song

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) OR (wang shiyong)) van thanh ((jae song) or (jie song)) shin cong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang zhiyong) OR (wang shiyong)) van thanh ((jae song) OR (jie song)) shin cong shu ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang zhiyong) OR (wang shiyong)) van thanh ((jae song) or (jie song)) shin cong shu ;*".