product detail page (front end)

Hello, first thanks for a great product

Next is my problem, I have 2 products in this category:

binhdong.vn/index.php/san-pham/danh-muc/17-nhom-bo-phoi

The left product lead to nowhere and the right product lead to somewhere I don't even know.

I already filled out detailed information in the products page (name, description, meta description, keywords).





Please help me.
Thank you.

That must come from a problem with the SEF on your website.
Could you try to turn it off ? Does it work after that ? What are the links in that case ?

it works if I turn off the SEF. However, the link is not very friendly ^^ as before. Thanks Nicolas.

What are the links in that case ?