# Page Not Found

The URL `files/fga9on59gV6pTS8fX6io` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Công nợ](https://manual.addy.vn/addy-sale-pro/cong-no.md)
- [Hạng thành viên](https://manual.addy.vn/addy-sale-pro/khach-hang/hang-thanh-vien.md)
- [Cấu hình thông báo hệ thống](https://manual.addy.vn/cai-dat/cau-hinh-thong-bao-he-thong.md)
- [Xuất hóa đơn](https://manual.addy.vn/addy-sale-pro/hoa-don/xuat-hoa-don.md)
- [Video Hướng dẫn sử dụng Addy Sale Pro](https://manual.addy.vn/video-huong-dan-su-dung-addy-sale-pro.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://manual.addy.vn/addy-sale-pro/cong-no.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://manual.addy.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://manual.addy.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., `/addy-sale-pro/cong-no.md`).

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