In Ukraine it’s common situation to have housenumbers like 43/2 and so on - in order to make search such houses we must update search.php:
$sHouseNumberRegex = ‘\\m’.str_replace(’ ‘,’[-, ]‘,$aSearch[‘sHouseNumber’]).’\\M’;
to
$sHouseNumberRegex = ‘\\m’.str_replace(’ ‘,’[-, /]‘,$aSearch[‘sHouseNumber’]).’\\M’;
Please make this update - cos i din’t have access to nominatim sources.