I do a search on the internet and found some information about the phrase "Shuo Cao Cao, Cao Cao jiu dao"
In english, it means "Speak of the devil"
"Speak of the devil" is an idiom or phrase used in both written and spoken English. It is used when an object of discussion (normally a person) unexpectedly becomes present during the conversation. For example, if Alice and Bob start discussing Charlie while he isn't in the room, and Charlie walks into the room, Alice or Bob might say, "Speak of the devil!"
It can also be used about a topic that quickly becomes relevant, such as the onset of rain or a car breaking down. Used in this sense it can be seen as an alternative to the phrase "tempting fate".
The phrase is an abbreviation of the Italian proverb (also well known in English) which runs, "Speak of the devil and the horns appear" (Parli del diavolo e spuntano le corna).
Taken from
http://en.wikipedia.org/wiki/Speak_of_the_Devil