# Page Not Found

The URL `files/lf4AJI4CpAxaAGOMdAag` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [34. Làm sao để in hóa đơn bán hàng ?](https://docs.pushsale.vn/thu-vien-cau-hoi/34.-lam-sao-de-in-hoa-don-ban-hang.md)
- [59. Làm sao để xóa nguồn đã tạo trong  mục 2.5.1](https://docs.pushsale.vn/thu-vien-cau-hoi/59.-lam-sao-de-xoa-nguon-da-tao-trong-muc-2.5.1.md)
- [41. Xuất excel ở báo cáo CEO dashboard V1/V2](https://docs.pushsale.vn/thu-vien-cau-hoi/41.-xuat-excel-o-bao-cao-ceo-dashboard-v1-v2.md)
- [136. Xây cảnh báo qua chấm điểm bảo mật](https://docs.pushsale.vn/thu-vien-cau-hoi/136.-xay-canh-bao-qua-cham-diem-bao-mat.md)
- [Page 4](https://docs.pushsale.vn/ii.-cap-nhat-tinh-nang-moi/page-4.md)

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

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

```
GET https://docs.pushsale.vn/thu-vien-cau-hoi/34.-lam-sao-de-in-hoa-don-ban-hang.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.pushsale.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.pushsale.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., `/thu-vien-cau-hoi/34.-lam-sao-de-in-hoa-don-ban-hang.md`).

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