Product never find whereas no hidden and no excluded

Hello
First, sorry for my en english ??
Somme products are never finded by Woo Predictive whereas they are no hidden and no excluded.

Help

I wand to test it befor more use but i am worry about this issue.

Thanks a lot

Francois

https://www.ads-software.com/extend/plugins/woocommerce-predictive-search/