Perhaps you should try some spelling variations:
dong yang » dong hoang, wang yang, yang yang
yong yan » yang yang, ying yang, yong yoon
hua rent » hua ren
rent yan » ren yan, rent a
non sacu » union sacu, non same, non sans
won sau » wong sau, wong sam, wong siu
yan ji » yan jiu, ban ji, pan ji

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((yong yan) or (dong yang)) hua rent yan ji ((won sau) OR (non sacu)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((yong yan) OR (dong yang)) hua rent yan ji ((won sau) OR (non sacu)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yong yan) or (dong yang)) hua rent yan ji ((won sau) OR (non sacu)) ;".
• Adding a wildcard symbol may retrieve word variants: wang ((yong yan) or (dong yang)) hua rent yan ji ((won sau) OR (non sacu)) ;*.