problems browsing catalog pages multilanguage site

Dear Giang,
January the 10th I opened a support ticket about the problems browsing the catalog pages on my multilanguage site.
Before You told me about the possibility of a problems with Joomla. Now my site is updated to version 3.5.1, but problem still remain.
Every day the Google scanning reports hundrets of errors.
Today I activated the Joomla redirect function and in half day I had 20 broken links for the same cause.
Can You look at the problem?
Thank You in advance and best regards.
Andrea