Pieces of Trang-Oul's set do not show under skill filters.

Device: desktop PC
Browser: firefox 148 64bit
OS: windows 10

Steps to reproduce: i looked for necro set pieces that give + to Skills to Curses and Poison/Bones and Summoning.
This link tells me there are no such items: sets/#filter=Poison%20and%20Bone%20Spells
Similarly this link tells me there are no such items: sets/#filter=Curses%20skills
But there should be parts (gloves and offhand) of the Trang-Ouls set shown on the above links.
Just like the chest piece is shown on this link sets/#filter=Summoning%20skills%20%5C(N ... 20Only%5C)

Anything else to add: I just started using this website so apologies if i am misunderstanding something.
I also do not know is this bug affecting any other items/sets.

Trang-Oul's Wing has "+2 To Poison And Bone Skills" but the filter is looking for "Poison and Bone Spells"
A solution would be to change the filter to just "Poison And Bone"

Trang-Oul's Claws have "+2 To Curses" but the filter is looking for "Curses skills"
A solution would be to change the filter to just "Curses"

The uniques have the same problem but with the proposed solutions the filters should work everywhere (sets/uniques/runewords).

Regardless of that I also noticed that the runeword White has "Poison and Bone Spells" instead of "Poison and Bone Skills" in it's description. Every other set/unique item has "Poison and Bone Skills" and ingame it's also "Poison and Bone Skills".
In addition

Homunculus is the only item with "To Curses Skills (Necromancer Only)". All other items have "To Curses (Necromancer Only)" and ingame it's also "To Curses (Necromancer Only)".