Let me suggest one more way for you to improve your listening skill. You should watch the TV show “Friends”. This TV show has 10 seasons. This is its description in Wikipedia
Friends is an American situation comedy about a group of six friends living in the New York City borough of Manhattan that was originally broadcast from 1994 to 2004. It was created by David Crane and Marta Kauffman, and produced by Kevin S. Bright, Marta Kauffman and David Crane. One of the most popular television series of all time, the show has been broadcast in over one hundred countries and still continues to attract good ratings for its episodes in syndication. The final episode of the show remains one of the largest in terms of television audience numbers in the U.S.
Watching this film, you will know how the Americans talk to each other in daily life. In my opinion, this is one of the most excellent comedy films I have ever seen. Especially, if you are familiar with the American culture, I’m sure that you will like it. Hopefully, you can find this film on DVDs in VietNam.