[Romaji] for both ON-reading and KUN-reading, e.g.: "koi"
[hv:Âm Hán Việt] for Sino-Vietnamese reading, e.g.: "luyến"
There are several other filters includes:
[grade:number],
[jlpt:number],
[stroke:number],
[radical:Kanji Radial]. You can combine the filters
to further narrow the search. Tips: Click on "options" to open up the assist panel