Searching for Fanfiction

#1
Is there a way to limit a search to just fanfic results, filtering out original works? 

Say I am looking for ASOIAF fics. Or Worm or MHA. How would I search for those in particular?  

I know that the large majority of works on RR are originals, but I am curious to see if there are fanfics on here that are not on other sites.

Thanks. 

Re: Searching for Fanfiction

#2
https://www.royalroad.com/fictions/search?type=fanfiction

https://www.royalroad.com/fictions/search?keyword=asoiaf&type=fanfiction
https://www.royalroad.com/fictions/search?keyword=game%20of%20thrones&type=fanfiction

https://www.royalroad.com/fictions/search?keyword=worm&type=fanfiction - this one is probably going to have some irrelevant stuff in it due to being a normal word, but it should filter out a decent amount.

https://www.royalroad.com/fictions/search?keyword=bnha&type=fanfiction
https://www.royalroad.com/fictions/search?keyword=mha&type=fanfiction