Launch Opera.
Visit a website that has a search box. For example, you might visit Bing.com, Metacrawler.com or Dogpile.com.
Right-click anywhere inside the search box. Opera will display a drop-down menu.
Click "Create Search." A pop-up window will prompt you for a name for the search.
Type a short, descriptive name in the "Name" for the search in the search box. Choosing something meaningful will help you recognize the search later when it appears on the toolbar.
Type a short keyword in the "Keyword" text box. This can be any short word or series of letters that you like. Click "OK."
Click "Tools" and then click "Appearance" to open the "Appearance" window.
Click the "Buttons" tab, and then click "Search." A list of available searches appears.
Click one of the searches. Hold down your mouse button and drag it to the toolbar. Opera will anchor it there.
Drag additional searches as needed to the toolbar. Click "OK" when done.