Paste or type your search term (Thai or English) into the textbox on the left. A set of links will then be displayed.
EITHER click on an individual link to see the result displayed in a new tab or window (depends on your browser)
OR click on the "Open" button to open the first group of links in preview windows on the right hand side of the screen.
Hover over the preview windows to see a popup larger version of the search results. Click outside the popup to close it.
For two of the searches shown on the right (Royal Institute Dictionary and LEXiTRON), you'll need to click the "Load" button in the popup window to load the search results.