Perhaps you should try some spelling variations:
cheng long » cheng leong, cheng ling, chen rong
chung tong » chung chong, phung tung, chung kang
zeng doug » jeng dong, zeng douglas
jun gang » und gang, jun gao, zum gang
doug bin » dong bin, dort bin, org bin
gang xi » yang xi, fang xia
qian » ian, kian, jian

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

• Performing a fuzzy search may retrieve terms with similar spellings: qian jun gang xi ((((chung tong) OR (chung mona))) or (cheng long)) zeng doug bin ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: qian jun gang xi ((((chung tong) OR (chung mona))) OR (cheng long)) zeng doug bin ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "qian jun gang xi ((((chung tong) OR (chung mona))) or (cheng long)) zeng doug bin ;*".