There are a lot of things that change and that one must tweak when one moves to a new country.
Google by default redirects searches to country specific websites (google.co.in in India, google.com.vn in Vietnam) and it gives you country specific search results, often with generous bits of the national language thrown in.
This is how you can revert to good old English search results sitting anywhere in the world.
1. Right Click the Address Bar and select “Edit Search Engines…”
2. This will open the ‘Search Engine’ dialog box in a new tab. Scroll down to the bottom of that page and you’ll see empty input boxes where you can add a new search Engine.
3. Enter ‘Google English’ into the first input box, ‘google’ into the second input box, and the URL below into the third input box. Then press the Enter key.
4. Now hover your mouse over the new entry we just created, you will see a ‘Make Default’ button at the right hand side of the screen. Click that. Click OK and Make Default. All Google search results will now be in English, the unofficial international language.