You could try this: http://www.mangago.me/r/l_search/?name=manhua - not sure how extensive it will be, but there was 17 pages of results = 170
If you want BL, here's one by Anonymous
http://www.mangago.me/home/mangalist/30015/
I put manhwa I read here (mostly BL and shoujo) http://www.mangago.me/home/mangalist/69776/
Btw if you use also Manga fox you can do the advanced search selecting Korean Manhwa http://mangafox.me/search.php
Mangago.com/tag/manhwa
isn't there a manhwa list in here ?