Post Type get_results current language

Hello,
First thank you for creating a great plugin like this!
I am creating a custom search and wanted to know where the relationship is in the post.

See the code below:

$query = $wpdb->get_results( 
	"SELECT ID, post_title, post_content, post_excerpt, guid
	FROM $wpdb->posts
	WHERE post_status = 'publish' AND post_type = 'page' AND 
	post_title LIKE '%$get_search_query%' OR post_content LIKE '%$get_search_query%'
	ORDER BY ID ASC"
);

I can search the page, but wanted using the same code to identify the language and reduce the search in the database. That is, where is the language of the statement in the post?
Again, thank you!