Perhaps you should try some spelling variations:
chang soon » chin soon, chang gordon
yang yang » wang yang, wang yan
chang won » chang ann, chang min, chang you
wan yang » wang yang, dan yang, tan yang
judy han » judy h, judy a
hong hai » shang hai, zhong tai, dang hai
hong yu » wong yue

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

• If you are trying to use Boolean operators, they must be ALL CAPS: wan yang yang judy han ((chang won) OR (chang soon)) ((hong hai) OR (hong yu)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yang yang judy han ((chang won) OR (chang soon)) ((hong hai) or (hong yu)) ;~".
• Adding a wildcard symbol may retrieve word variants: wan yang yang judy han ((chang won) OR (chang soon)) ((hong hai) or (hong yu)) ;*.