Result difference between search engines

Hello everybody,

I don't find the same result in the principal search engine of the web site and the "check for duplicate" search engine.

For example, french products as "velouté de potiron" or "petits pois" aren't find by the principal search engine, but when I try to update the database, the "check for duplicate" search engine find corresponding entries. The android app search engine too.

Some of products (all?) found by "check for duplicate" but not by website search engine seems to be added by "Mobile User".

It seems they are two databases but they aren't correlated.

Maybe an issue to resolve for the technical staff?

Best regards