I've tried the link you provided, but instead of the page, it gives me a file download for some reason. I tried with firefox, chrome and IE11, but none of them seems to work.
For WPML there is nothing extra to add, the search should display the results in the correct language by default. I might have made some changes in your case, I can't remember, it was a week ago I think.
If you can re-enable my access I can check.Best,
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