Perhaps you should try some spelling variations:
wang dinh » wang jing, wang ning, sang minh
dinh than » dinh tuan, binh thanh, binh thang
than you » can you
you chen » you when, you chenli, you check
yang jin » yang jie, yang jun, ying jin
yang jui » yang judy, yang di, yang yi
wong siu » wong shiu, kong siu, wong sau
yang xi » yang di, yang yi

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: wang dinh than you chen ((((((yang jin) OR (yang dean))) OR (yang xi))) OR (yang jui)) wong siu ;~.
• Adding a wildcard symbol may retrieve word variants: wang dinh than you chen ((((((yang jin) or (yang dean))) or (yang xi))) or (yang jui)) wong siu ;*.