Perhaps you should try some spelling variations:
chang soon » chin soon, chang gordon
chang won » chang ann, chang min, chang you
shang hai » shang kai, dang hai, chang ha
daun yan » daun yang, daud wan, sun yan
yan guan » gan guan, yan yuan, yang guang
guan wei » hua wei, guan li, han wei
wei when » wei shen, ii when, wei ben
wang yue » wong yue, wang hua, wang yan

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: daun yan guan wei when ((chang won) OR (chang soon)) ((shang hai) OR (wang yue)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "daun yan guan wei when ((chang won) OR (chang soon)) ((shang hai) or (wang yue)) ;~".
• Adding a wildcard symbol may retrieve word variants: daun yan guan wei when ((chang won) OR (chang soon)) ((shang hai) or (wang yue)) ;*.