Perhaps you should try some spelling variations:
wong john » wrong john, kong john, longo john
kong sara » kong sar
yan tuan » yan guan, anh tuan, can turn
yan yuan » yan guan, fang yuan, nan yan
ren wong » ren weng
hua ren » hua chen
von sa » von sam, von sap, von sl
wang » wan, lang

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 wing) ((yan tuan) or (yan yuan)) hua ren wong john ((von sa) or (kong sara)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR wing) ((yan tuan) OR (yan yuan)) hua ren wong john ((von sa) OR (kong sara)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang OR wing) ((yan tuan) or (yan yuan)) hua ren wong john ((von sa) or (kong sara)) ;*".