Google search. Encoding issues in Chrome and FF. How to contact Google?

Question

Google

Greetings.
Here's what I noticed today. In Google Chrome (32.0.1700.107 m) and Mozilla Firefox (27.0.1) browsers. When  searching Google for the site index and switching from the browsers described above, the encoding breaks. The real text query in the link is replaced by the sequence "%EF%BF%BD" (try to follow the link to go to some page from the search). Previously, I thought that the problem was with my site, but when I launched the traffic interceptor, I found out what exactly Google was sending to the false address.
Unfortunately, on February 13, Google even reduced the daily traffic to my site by ten times, now there is reason to believe that the behavioral factor influenced.
I am looking for a way to contact Google (some kind of bug tracking), to report the problem, but to no avail. Guide me please.
Thank you all in advance.
Sincerely.

Answer 1

And what's the problem? Everything works as it should in ff 27.0.1
In chrome, yes, there are problems.
https://productforums.google.com/forum/
There, on the right of the settings icon - Report a problem with Google groups or search the forum, the question may have already been asked.

Answer 2

Here you need to write, I made a mistake
https://productforums.google.com/forum/#!forum/web...
https://www.google.ru/contact/
select Search, send here
https://support .google.com/websearch/?rd=2#topic=3...
select problems with google search, send here
https://support.google.com/websearch/troubleshoote...
And try to find further or step by step answer, or go to the forum, link in the text.
In general, if you urgently need it, then on the contact page there are Moscow numbers (on the map)
www.google.com/intl/ru/about/company/facts/locations
Google Moscow
OOO Google
7 Balchug st.
Moscow 115035
Russian Federation
Phone: [phone]
Fax: [phone]