To find Dragon Ball Z content on the Internet Archive, try these search terms:
If you're interested in preserving and sharing anime and manga culture, consider contributing to the Internet Archive or other digital preservation efforts.
A remastered collection of the Ocean Group's later DBZ episodes. View Remastered Dub
You're interested in accessing Dragon Ball Z content through the Internet Archive! Here's what I found:
The Wayback Machine preserves the history of the early DBZ "web," including the original Official Funimation DBZ site and Chris Psaros's legendary DBZ Uncensored. Rare Media and Preservation Projects