I have a package coming from CA via DHL and I couldn't get any of the DHL selections to show anything, I could track it through the EaseUS link provided by the seller, or on the DHL site. I was able to see it on DHL using Show in Browser only if I selected DHL eCommerce.
Google has started ignoring your default drawer and opening search results in some sort of mini-browser. When I use Show in Browser, thats what it uses. Deliveries may be a web kit app and something is getting confused and re-instincing instead of opening the mimi-browser. I'm also guessing DHL changed their query syntax and that broke Deliveries. I'd try changing your default browser to something else, or nothing at all, Then try clearing cache (Settings-> Applications-> Application Manager) for, in order: 1) Your browsers, 2) Google search app, 3) Deliveries. Beyond that, I got nothing. Hope that helps.