Perhaps you should try some spelling variations:
chen huang » chen shuang, chen huigang, chen yugang
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
huang thi » phuong thi, dang thi, huang di
wong shiu » wong siu, cong shu, song shin
gong hui » tong hui, tong shui, wang hui
yi hua » li hua, yi hui, ying hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (wang yang)) ((yi hua) or (ya hua)) chen huang thi ((wong shiu) or (gong hui)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (wang yang)) ((yi hua) OR (ya hua)) chen huang thi ((wong shiu) OR (gong hui)) ;.
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yang)) ((yi hua) or (ya hua)) chen huang thi ((wong shiu) or (gong hui)) ;*.