# Page Not Found

The URL `files/j7NCTZ6vVtv2AjoOsroG` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Cập nhật hồ sơ](https://help.flyer.vn/flyer/cap-nhat-ho-so.md)
- [Kích hoạt tài khoản](https://help.flyer.vn/flyer/kich-hoat-tai-khoan.md)
- [Hướng dẫn thanh toán trên VNpay](https://help.flyer.vn/flyer/huong-dan-thanh-toan-tren-vnpay.md)
- [Kiểm tra trình độ Tiếng Anh](https://help.flyer.vn/flyer/kiem-tra-trinh-do-tieng-anh.md)
- [Đăng nhập tài khoản luyện thi](https://help.flyer.vn/flyer/dang-nhap-tai-khoan-luyen-thi.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://help.flyer.vn/flyer/cap-nhat-ho-so.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

### Option 2 — Browse the documentation index

Full index: https://help.flyer.vn/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://help.flyer.vn/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/flyer/cap-nhat-ho-so.md`).

You may also use `Accept: text/markdown` header for content negotiation.