Custom links for a Polymer App or saved view
You can customize the portion after "polymersearch.com" by customizing the url for your dataset. Click the 3 dots to the right of your dataset's name and then select ‘Customize’ from the drop-down. A popup will appear where you can add your customized url.
If you want a fully custom domain, you can embed your Polymer App or saved view within your own site. Find the embed code for your Polymer App under the collaborate icon in your Polymer App & the embed code for a saved view under the share icon of each view.