allow arbitrary "next <x> days" or " next <x> months" date search

'Next 7 days' and 'next 3 days' work as search terms.  

However!  'next 5 days' and 'next 30 days' do not work!  So it seems a generalized search for 'next <x> days' has not been implemented.  

So, while 'next 3 days' and 'next 7 days' are really useful as search terms (thank you workflowy team) being able to search for an arbitrary 'next <x> days' would be even more useful.

And I'm talking arbitrary.  Being able to search 'next 365 days' and 'next 730 days', or 'next 12 months' and 'next 24 months' would be really useful to me.