> For the complete documentation index, see [llms.txt](https://docs.miniapp.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.miniapp.vn/goi-tinh-nang/tinh-nang-add-on/mua-x-tang-y.md).

# Mua X tặng Y

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