"Tay Ba Lo" - The English Teachers

Nowadays, many young people are traveling to foreign countries to teach English as a second language. That would be a good job. Because English is now the global language. So alot of people all over the world need to learn English for their lives. People from English-speaking countries can travel to non-English-speaking countries to teach English. For example: There are alot of English, American, Australia... who have come to Vietnam and taught English. Each of them can earn $ 3,000 - $ 10,000 per month. Yet, some of them teach English very badly because they do not have enough experences Teaching English. Those People may be called "Tay Ba Lo".