Open the TDDP using the link https://portal.tern.org.au.
You can select Map based search bar to search TERN data using map, this map search will provide options to select data by drawing region, a polygon on the map, search using Longitude & Latitude.
Selecting the Map Search will display the page as;
Use different tools to draw a region, draw a polygon, provide Lat Long details or provide a name (text box) to show locations on map.
Provide the Longitude & Latitude details to the Coordinates section of the map tools and hit 'Go' button.
To clear the selection on the map, hit which clears the data selection display.