Perhaps you should try some spelling variations:
wang oanh » wang yan, wang yang, dang anh
chen yang » chen rong
yang john » young john, king john, yang jin
tran hua » tran duc
tuan hua » tuan vu, yuan hui
bonn sam » bonn am, bonn zum, bonn a
tan hua » tan chia, tan puay

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang oanh ((tran hua) or (((((tan hua) OR (tuan hua))) or (wang hua)))) chen yang john bonn sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang oanh ((tran hua) OR (((((tan hua) OR (tuan hua))) OR (wang hua)))) chen yang john bonn sam ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang oanh ((tran hua) or (((((tan hua) OR (tuan hua))) or (wang hua)))) chen yang john bonn sam ;".
• Adding a wildcard symbol may retrieve word variants: wang oanh ((tran hua) or (((((tan hua) OR (tuan hua))) or (wang hua)))) chen yang john bonn sam ;*.