Perhaps you should try some spelling variations:
wang yuhan » wang luhang, wang yan, wang yidan
wang wang » wang yang, wang liang, wang yan
yuhan hua » tuan hua, yuan hui, yuhuan huang
hua irene » hua ren
john wong » john bonn
john song » john bonn, john ngosong
jin song » jie song, kim song, jin ying

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

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