# Page Not Found

The URL `files/QYILEMDg5ZNoAg5tiKRm` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [3.11 Kết nối giao hàng tiết kiệm](https://docs.sandbox.com.vn/3.-kho/3.11-ket-noi-giao-hang-tiet-kiem.md)
- [10.2 Lịch sử đăng kí tiện ích](https://docs.sandbox.com.vn/10.-tien-ich/10.2-lich-su-dang-ki-tien-ich.md)
- [1.2 Quản lý nguồn dữ liệu](https://docs.sandbox.com.vn/1.-marketing/1.2-quan-ly-nguon-du-lieu.md)
- [1.1.6 Xóa file contact import](https://docs.sandbox.com.vn/1.-marketing/1.1-quan-ly-lead/1.1.6-xoa-file-contact-import.md)
- [1. Tại sao lên đơn ở màn Thu ngân không áp dụng được Khuyến mãi?](https://docs.sandbox.com.vn/thu-vien-cau-hoi/1.-tai-sao-len-don-o-man-thu-ngan-khong-ap-dung-duoc-khuyen-mai.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://docs.sandbox.com.vn/3.-kho/3.11-ket-noi-giao-hang-tiet-kiem.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://docs.sandbox.com.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://docs.sandbox.com.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., `/3.-kho/3.11-ket-noi-giao-hang-tiet-kiem.md`).

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