# Page Not Found

The URL `files/Uh3F3Gt4mRJp81ss5yAy` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Hóa đơn điều chỉnh, thay thế có cần gửi tbss 04 hay không?](https://hotro-hoadonbachkhoa.pmbk.vn/cac-loi-thuong-gap/hoa-don-dieu-chinh-thay-the-co-can-gui-tbss-04-hay-khong.md)
- [1.1 Truy cập vào phần mềm hóa đơn điện tử Bách Khoa](https://hotro-hoadonbachkhoa.pmbk.vn/cac-buoc-de-bat-dau-su-dung-phan-mem/thao-tac-truy-cap-phan-mem.md)
- [Giới thiệu](https://hotro-hoadonbachkhoa.pmbk.vn/master.md)
- [4.3 Thông báo sai sót không cần lập lại hóa đơn](https://hotro-hoadonbachkhoa.pmbk.vn/4.-xu-ly-hoa-don/4.3-thong-bao-sai-sot-khong-can-lap-lai-hoa-don.md)
- [1.9.3 Thiết lập công cụ ký](https://hotro-hoadonbachkhoa.pmbk.vn/cac-buoc-de-bat-dau-su-dung-phan-mem/1.9-tuy-chon/1.9.3-thiet-lap-cong-cu-ky.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://hotro-hoadonbachkhoa.pmbk.vn/cac-loi-thuong-gap/hoa-don-dieu-chinh-thay-the-co-can-gui-tbss-04-hay-khong.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://hotro-hoadonbachkhoa.pmbk.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://hotro-hoadonbachkhoa.pmbk.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., `/cac-loi-thuong-gap/hoa-don-dieu-chinh-thay-the-co-can-gui-tbss-04-hay-khong.md`).

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