Here's a worthwhile piece to read from Google, especially if you're involved in multilingual search. "How Google Search handles multilingual searches"
It includes;-
How Google automatically determines the language for search results
How to filter results to a particular language
How content producers should consider multilingual searchers
[developers.google.com...]
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| developers.google.com |
| How Google Search handles multilingual searches Google Search Central Blog Google for Developers |
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