Do some of the more unique magic items like Sword of Wounding also get a plus bonus or no?

@SlyFlourishDo some of the more unique magic items like Sword of Wounding also get a plus bonus or no? A magic item confers a bonus to attack and damage rolls only if its description says it does. @Wizards_DnD

— Jeremy Crawford (@JeremyECrawford) March 6, 2015