Being based in France, I see ads from e-bay in French. But many are not related to chess. The reason is that "chess" is "échecs" in French, always at plural, with an "s" at the end. The word in singular, "échec" means "failure" in English. (It also means "check" which may complicate).
So, there several ads for books dealing with the failure of something, failure of education, failure of economy, whatever, but no relation at all with chess.
The search term has in fact been "echecs", but since you pointed it out, I did see some books in the preview for the books ad that used the world echec, such as L'ECHEC DE L'ISLAM. To fix this, I changed the search terms to "echecs -echec", and only books with "echecs" in the title showed up.
The search term has in fact been "echecs", but since you pointed it out, I did see some books in the preview for the books ad that used the world echec, such as L'ECHEC DE L'ISLAM. To fix this, I changed the search terms to "echecs -echec", and only books with "echecs" in the title showed up.