по неизвестной причине(Unfortunately, for whatever reason, the victim did not come forward. • The image became synonymous with the notion that the 'spaceman' was an alien visitor that, for whatever reason, was invisible in person but which showed up in the photograph.'unexplained-mysteries.comART Vancouver)
непонятно почему(For whatever reason my in-laws don't like my cooking. • Vancouver city council votes to allow safe inhalation sites -- "Tired of the pandering. For whatever reason 'harm reduction' is only about getting drug into an addict and never about reducing harm to the community." (Reddit)ART Vancouver)