Perhaps you should try some spelling variations:
kong star » kong sar
hua test » a test
yang jin » yang jie, yang jun, ying jin
wong sam » wong sau, wong lai, kong sar
wan yan » wang yan, nan yan, wai yan
yan yan » yan yuan, nan yan, yang yang
yan hua » tan hua, ya hua, wang hua
yan jim » yan jiu, yang jie

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan yan hua test ((yan jim) OR (yang jin)) ((wong sam) or (kong star)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan yan yan hua test ((yan jim) OR (yang jin)) ((wong sam) OR (kong star)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan yan hua test ((yan jim) OR (yang jin)) ((wong sam) or (kong star)) ;*".