Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
chen sang » chen yang, chen wang, chen shuang
sang min » sang minh, song min, tang min
min hong » amin hong, tin hong, min hyoung
hong shu » cong shu, tong shui, wong shiu
ka chai » ka chuan, kim chai
ka hua » ya hua, ka chuan

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 ((ka hua) or (ka chai)) chen sang min hong shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ((ka hua) OR (ka chai)) chen sang min hong shu ;.
• Adding a wildcard symbol may retrieve word variants: yang yang ((ka hua) or (ka chai)) chen sang min hong shu ;*.