This hasn’t been formally announced by Google yet, but industry blogs are picking up on it and so are our readers: the company has started to include buttons that open up virtual keyboards when doing a search on non-English search portals.
Clicking the button opens a virtual keyboard (see screenshot above), which can be dragged to anywhere on the screen by clicking the blue bar at the top. You can also use the up and down arrows to show more characters commonly not present on physical keyboards.
The basic idea behind the virtual keyboard is that users can enter the precise search terms they want, regardless of the language keys on their real keyboards. As Google points out on its support pages, this can prove particularly helpful to people who use one of the many non-Latin script-based languages that require special characters such as Arabic, Greek, and Thai.
(Thanks to Luboš Loužensky for the tip)