To understand the subject, one must deconstruct the nomenclature:

Because this font is niche, searches often lead to sketchy "free font" websites. Be cautious: many are outdated (Windows 98-era), contain malware, or are missing Unicode mapping.

Only download/use Monotype Corsiva Viet Hoa portable if:

Otherwise, avoid it. Choose an open-source script font with proper Vietnamese OpenType features (e.g., Pacifico, Caveat, or Alex Brush) — they are cleaner, legal, and truly portable.

Would I recommend it? No, except for throwaway personal use on a non-internet-connected machine. For professional Vietnamese design, invest in a proper license or use free, legal alternatives.