Perhaps you should try some spelling variations:
john ngosong » john song
wang oanh » wang yan, wang ban, wang dan
wang yang » wang yan, wang liang, wang yanling
yang john » young john, king john, yang jin
dang anh » duong anh
tran duc » tran dat, tran dai
ren yang » ren yan, chen yang, dan yang
duc ren » duc tran, duc vien
sam » same, sham, syam

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) OR (dang anh))) or (wang yang)) tran duc ren yang john ngosong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((wang oanh) OR (dang anh))) OR (wang yang)) tran duc ren yang john ngosong sam ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wang oanh) OR (dang anh))) or (wang yang)) tran duc ren yang john ngosong sam ;".
• Adding a wildcard symbol may retrieve word variants: ((((wang oanh) OR (dang anh))) or (wang yang)) tran duc ren yang john ngosong sam ;*.