Perhaps you should try some spelling variations:
john ngosong » john song
chen yang » chen rong
yang john » young john, king john, yang jin
yan tuan » yan guan, anh tuan, can turn
yan yuan » yan guan, fang yuan, nan yan
vu chen » yu chen, jui chen, yu cheng
wang » wing
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 or lang) or wan) ((yan tuan) OR (yan yuan)) vu chen yang john ngosong sam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang OR lang) OR wan) ((yan tuan) OR (yan yuan)) vu chen yang john ngosong sam ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang or lang) or wan) ((yan tuan) OR (yan yuan)) vu chen yang john ngosong sam ;".
• Adding a wildcard symbol may retrieve word variants: ((wang or lang) or wan) ((yan tuan) OR (yan yuan)) vu chen yang john ngosong sam ;*.