Polylang is a fantastic plugin that adds multilingual support to WordPress:
-Polylang allows you to create a bilingual or multilingual WordPress site. Write posts, pages, and create post categories and tags as usual, and then define the language for each of them. Translation is optional. The plugin does not integrate automatic or professional translation.-
After installing and activating SearchWP Polylang Integration, SearchWP will limit search results to the active language of your content segmentation powered by Polylang.
Get SearchWP Polylang Integration now.