Why does Yandex search not search normally on the site?

Question

Yandex

I installed a search for Yandex on the site logosrd.ru. When searching in English, everything is fine, but in Russian it does not find anything. As I understand it, because the encoding changes in the address bar, and if you enter Russian letters directly in the address bar, then everything is fine. How to solve this problem?

Answer 1

In the Yandex settings, the site indicated without www, and the site translated it to www, and because of this redirect, the encoding changed. In the settings I specified a site with www and everything worked

Answer 2

do not change encoding