Perhaps you should try some spelling variations:
china zhang » china chang, cheng zhang, chin chang
thank you » than you
yi chang » ii chang, ying chang, jin chang
you jong » you going, you dont, you jin
jong min » gong min, song min, song ming
kong yam » kong sar
kong a » kong _, kong sar

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: liang ((china zhang) OR (yi chang)) thank you jong min ((kong a) OR (kong yam)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "liang ((china zhang) or (yi chang)) thank you jong min ((kong a) OR (kong yam)) ;~".
• Adding a wildcard symbol may retrieve word variants: liang ((china zhang) or (yi chang)) thank you jong min ((kong a) OR (kong yam)) ;*.