Giới thiệu bản thân. Trình bày lý do viết thư. Xin lời khuyên cụ thể. Giải thích ngắn gọn vì sao bạn đang gặp khó khăn để tự mình xử lý vấn đề. Hãy ngắn gọn. Viết lời cảm ơn cuối thư.

Given the above summary, write a detailed text in English for it.
If the person does not already know who you are, you will want to include a short paragraph introducing yourself at the beginning of the letter (after the salutation). Include information about who you are, and any information that is related to the reason why you are writing. After introducing yourself (if necessary), you will want to get straight to the point. You should begin by explaining the purpose of your letter. There are lots of ways that you can open a letter politely. Examples include:  ”I am writing to ask if you could help me with…” ”I would appreciate if you could give me some advice about…” ”I am writing to ask for your advice.” ”I wonder if you could help me with a problem.” You should come up with 3 to 5 questions that you want answered, and write them out. Avoid writing a long list of complicated questions that would take hours of work to answer. Keeping it short and to the point will increase your chances of receiving a reply. If you’re asking for advice for a problem or situation that you have been trying to solve on your own, but haven’t been able to. Then briefly explained what you have tried, and why it didn’t seem to work.  This can help the advice giver know that you really need their help and that you’re not being lazy. It can also save time and effort because they won’t suggest something you’ve already tried. For example, if you'd like advice on how to deal with bullying at school, you could say, “There's a big problem with bullies at my school. How can I deal with them? How can I help stand up for someone who's being bullied? What can I do to make bullying happen less often?” The person you are asking for advice will be less likely to respond if you send them a very long and detailed letter. This is because they will have to spend significant time reading and understanding your letter. If and when they write their response, they will probably have to write a longer, more detailed response in order to address everything you have written. Keeping it brief will increase your chance of...