Binary Viewer Find
As you would expect, Ctrl+F opens Find dialog, and F3 does "FindNext".
Ctrl+G does "Go To Address"
Sorry, we kind of made up the screenshots to explain what Data Viewer does, but now they might be misleading on when it does it. TextViewer will start search or will jump to specified address only after you click a button in the popup dialog, and dilog get closed, not when dialog is still on a screen.