Hello Lan! I see that you're looking for help with your IELTS. I've been instructing international students for over 10 years and would be more than happy to help you on your journey. I'm a new teacher on italki. However, I currently instruct full time in Saigon, Vietnam. If you're interested in learning more you can find me over @ http://www.italki.com/teacher/1610322 . I instruct specialized classes through italki that focus on the IELTS and TOEFL examinations. . Thank you for your time and have a great day!

If you mean English writing, you should better ask in the English group and not in the Vietnamese learning section. I think there are more competent people.