# Page Not Found The URL `files/-M_-v44R3p_EGSbwc-NF` does not exist. This page may have been moved, renamed, or deleted. ## Suggested Pages You may be looking for one of the following: - [12. Nếu cần hỗ trợ, tôi có thể thông báo như thế nào?](https://how.doopage.com/faq-1/faq/13.-neu-can-ho-tro-toi-co-the-thong-bao-nhu-the-nao.md) - [Term of service](https://how.doopage.com/term-of-service.md) - [6. Thỏa thuận cam kết chất lượng (Service Level Agreement)](https://how.doopage.com/faq-1/faq/6.-thoa-thuan-cam-ket-chat-luong-service-level-agreement.md) - [16. Làm sao để tôi thêm được Fanpage mới vào DooPage?](https://how.doopage.com/faq-1/faq/17.-lam-sao-de-toi-them-duoc-fanpage-moi-vao-doopage.md) - [Các thao tác trên app điện thoại](https://how.doopage.com/thao-tac-danh-cho-nhan-vien/tu-van-khach-hang-tren-dien-thoai.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://how.doopage.com/faq-1/faq/13.-neu-can-ho-tro-toi-co-the-thong-bao-nhu-the-nao.md?ask= ``` 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://how.doopage.com/sitemap.md Use this to discover valid page paths or navigate the documentation structure. ### Option 3 — Retrieve the full documentation corpus Full export: https://how.doopage.com/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., `/faq-1/faq/13.-neu-can-ho-tro-toi-co-the-thong-bao-nhu-the-nao.md`). You may also use `Accept: text/markdown` header for content negotiation.