Perhaps you should try some spelling variations:
wang yang » wang yan, wang liang, wang yanling
yang yang » wang yan
sang minh » kang minah, anh minh, song min
tang min » chang min, yang mind, tang li
wang hui » wang hua, wang zhi, wang he
wang wei » zhang wei, wang zhi
yang li » yang lin, yang di, yang xi
li lee » ii lee

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang yang li lee ((tang min) or (sang minh)) ((wang hui) OR (wang wei)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang yang li lee ((tang min) OR (sang minh)) ((wang hui) OR (wang wei)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang yang li lee ((tang min) or (sang minh)) ((wang hui) OR (wang wei)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yang yang li lee ((tang min) or (sang minh)) ((wang hui) OR (wang wei)) ;*.