> For the complete documentation index, see [llms.txt](https://doc.portal.io.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.portal.io.vn/cong-thong-tin-so/nen-tang-so-viet-nam/cong-thong-tin-xa-hoi-so.md).

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