# Page Not Found

The URL `files/-Mb_jN2OieRJUe9c6RUR` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [84. Làm thế nào để duyệt nguồn dữ liệu](https://docs.pushsale.vn/thu-vien-cau-hoi/84.-lam-the-nao-de-duyet-nguon-du-lieu.md)
- [60. Làm thế nào để chỉnh sửa combo](https://docs.pushsale.vn/thu-vien-cau-hoi/60.-lam-the-nao-de-chinh-sua-combo.md)
- [Làm thế nào để xoá trùng, lọc trùng?](https://docs.pushsale.vn/cau-hoi-thuong-gap/4.-telesale/lam-the-nao-de-xoa-trung-loc-trung.md)
- [63. Làm thế nào để xuất excel nhiều trang cùng lúc được?](https://docs.pushsale.vn/thu-vien-cau-hoi/63.-lam-the-nao-de-xuat-excel-nhieu-trang-cung-luc-duoc.md)
- [18. Làm thế nào để thu hồi số của sale?](https://docs.pushsale.vn/thu-vien-cau-hoi/18.-lam-the-nao-de-thu-hoi-so-cua-sale.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.pushsale.vn/thu-vien-cau-hoi/84.-lam-the-nao-de-duyet-nguon-du-lieu.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/84.-lam-the-nao-de-duyet-nguon-du-lieu.md`).

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