Perhaps you should try some spelling variations:
duncan colin » duncan scaling, duncan kalina, duncan foley
colin chang » chin chang, chain change
chang gui » chang jui, chang su, chang yun
yang july » yang judy, yang jui, yang jun
dang hadi » dang hai
gui chen » jui chen, yi chen, goh chen
yang yi » yang xi, yang jui

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: duncan colin chang gui chen ((yang yi) OR (((yang di) OR (yang july)))) dang hadi ;~.
• Adding a wildcard symbol may retrieve word variants: duncan colin chang gui chen ((yang yi) or (((yang di) or (yang july)))) dang hadi ;*.