You will need to install a user script manager extension to install this script.
A user script that lets you quickly switch Google search to different region.
Google does have an option to search in different region, but it's only available in "Advanced Search" page. This user script adds a region menu to Google search page so you can access it directly.
You can configure regions and URLs by clicking "..." in dropdown menu.
The following regions are supported:
Argentina, Australia, Austria, Belgium (fr), Belgium (nl), Brazil, Bulgaria, Canada, Canada (fr), Catalonia, Chile, China, Colombia, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hong Kong, Hungary, India, Indonesia, Indonesia (en), Ireland, Israel, Italy, Japan, Korea, Latvia, Lithuania, Malaysia, Malaysia (en), Mexico, Netherlands, New Zealand, Norway, Peru, Philippines, Philippines (tl), Poland, Portugal, Romania, Russia, Saudi Arabia, Singapore, Slovakia, Slovenia, South Africa, Spain, Spain (ca), Sweden, Switzerland (de), Switzerland (fr), Switzerland (it), Taiwan, Thailand, Turkey, United Kingdom, United States, United States (es) and Vietnam.
src/data/regions.json for details.)
Licensed under the MIT License.