when I search "bo" text, Id finds presets with no "bo" at any place in the text

[Mahabarata]

I want to find the tag preset for "bois" (french translation of the preset natural=wood). So I begin the search with the first letters "bo".

Bug = the result gives me some presets with no "bo" in the french texts.

Here I show the texts from transifex : the english text | the french translation | the english synonyms | the french synonyms :

• Wilderness Hut | Refuge de bivouac | <translate with synonyms or related terms for 'Wilderness Hut', separated by commas> | refuge de bivouac, refuge non gardé, cabane
• Convenience Store | Épicerie / Supérette | <translate with synonyms or related terms for 'Convenience Store', separated by commas> |supérette, petite épicerie du coin

No 'bo" string in these texts (english and french) so why iD selects them in the result list ?

The result also shows a preset with no "bo" in the french texts (but in the english texts)

• Bookstore | Librairie | <translate with synonyms or related terms for 'Bookstore', separated by commas> | librairie, papeterie

No "bo" in the french translation so why iD selects this preset in the result list ?