> For the complete documentation index, see [llms.txt](https://app.powercard.io.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://app.powercard.io.vn/thanh-toan-and-lap-hoa-don/thanh-toan/tro-giup-ve-tai-khoan.md).

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