Three things: one woman's "hint" is another woman's platonic behavior and "hints" are meant to be subtle so that they provide plausible deniability if there is no interest returned.
Dont blame us for not "getting" hints when part of the point is to be able to easily brush them off as not being signs of romantic interest. If you are interested in a dude, use your words.
And lastly, us not asking a woman out in response to her hints doesn't necessarily mean we didn't get the hints. It may just mean we aren't interested in that particular person and dont want to make it awkward.