Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
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 ka » yang fan, yang yao
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: dong yang ka hua test sang minh ((long shu) OR (wong sau)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong yang ka hua test sang minh ((long shu) OR (wong sau)) ;*".