Perhaps you should try some spelling variations:
yang july » yang judy, yang jui, yang jun
sang minh » kang minah, anh minh, song min
yan yang » yang yang, yao yang, dan yang
july ren » july lei
ren sang » lee sang, le sang, ren weng
wong yue » wang yue
wang » wing, 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 yan yang july ren sang minh ((((hong yu) OR (wong yue))) or (hong seo)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yan yang july ren sang minh ((((hong yu) OR (wong yue))) OR (hong seo)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan yang july ren sang minh ((((hong yu) OR (wong yue))) or (hong seo)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yan yang july ren sang minh ((((hong yu) OR (wong yue))) or (hong seo)) ;*.