How can I make a search in yandex or a search in google depending on the searched text?

Question

Google Chrome

Once again, I find that yandex text in Russian is looking better than google.
But since I often have to search in English, I left the search through google in Chrome by default. I would like to automate this moment, that is, so that if there is at least one Russian letter in the search / address bar, a search is carried out in yandex, and in other cases - in google.
Does anyone know of a plugin that provides this functionality?
[It would also be nice to have this option: apply this rule only if there is a 'site:' in the query / search string, since I'm still not sure that Yandex would be better for my queries in Russian, but when searching on specific sites, Google searched for me really worse (either the result was not found at all, or somewhere on the 5th page, while Yandex had the desired result on the first page).]

Answer 1

Because I didn’t find a ready-made solution, I made a simple script on GitHub.
In Chrome, it is configured as follows:
1. Go to Settings -> Search Engine Management .
2. Click ADD .
Search engine
Keyword
Link with parameter %s instead of query
gysearch.github.io?%s

Answer 2

it’s easier to set up Yandex in Firefox, and in Chrome
you can also write a Mozilla plugin or adapt the current one, see for example