If you've been exploring different ways to block sites with shallow or low-quality content,there is a chromium extension for this now.This is an early, experimental extension so people can block sites from their web search results. If installed, the extension also sends blocked site information to Google to help them study the resulting feedback.They might use it as a potential ranking signal for their search results.
You can download the extension and start blocking sites now.
When you block a site with the extension, you won’t see results from that domain again in your Google search results. You can always revoke a blocked site at the bottom of the search results, so it's easy to undo blocks:
You can also edit your list of blocked sites by clicking on the extension's icon in the top right of the Chrome window.
This is an early test, but the extension is available in English, French, German, Italian, Portuguese, Russian, Spanish and Turkish.
PS Dont know why google never supported bengali.This is the language which leads to celebration of 21st Feb as UN 'bhasa diwas'(language day).In history this is probably only language which leads to the formation of a new country.By ignoring it google is ignoring a huge amount of sacrifices made by bengalis.