Terms for subject General containing scarce as hens' teeth

English	Russian
as scarce as hen's teeth	днём с огнём не отыщешь (goorun)
as scarce as hen's teeth	кот наплакал
scarce as hen's teeth	днём с огнём не найти (КГА)
scarce as hen's teeth	птичье молоко (something difficult to obtain КГА)