Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
test sang » test salt, test sat
sang minh » kang minah, anh minh, song min
hua test » a test
long shu » cong shu, tong shui, long du
wong sau » wong sam, wong siu, wong shiu
yang ya » yang yao, yang yi, yang ka

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 ya hua test sang minh ((long shu) or (wong sau)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: yang yang ya hua test sang minh ((long shu) OR (wong sau)) ;.
• Adding a wildcard symbol may retrieve word variants: yang yang ya hua test sang minh ((long shu) or (wong sau)) ;*.