Where can I find Complete problem set of
this contest? The contest page have no submit option.
And where I can find the Editorial of this contest?
Is there a way I can search a particular problem by it’s name? Like, if I want to find Chef and Pattern , where and by what key word should I search?
Thanks in advance 
you can find the question of an external contest in a peer section…
you can directly go to the question from the link …of the question …
for example…
just remove WPC1501 in the above link
it will take you to the question in peer section…you can submit code here…
and you can find its editorial on discuss.codechef.com
just search for it…from the given search bar…