É possível pesquisar por um tópico que NÃO esteja em uma categoria?

[jomaxro (Joshua Rosenfeld)]

Duplicate of:

New search operator "not" for tags only

Over at Stonehearth we’ve started to have the want to search for topics that don’t have a certain tag on them, or that aren’t by a certain user. To the best of my understanding, this isn’t currently possible. As such, we’d like to request a negation operator for search, like Google support -.

(and likely more)