• use keywords like ___ wts (ex. le sserafim wts, chaewon wts)
• ___ 포토카드 (ex. le sserafim 포토카드, translates to le sserafim photocard)
• look up specific kr phrases for the group you want (i don’t know them all)
• look up the group or idol’s name in hangul and then put it before the term youre looking for

other specific terms :

• 미공포 / 특전: pobs
• 하자: defects, damages
• 판매 / 양도: selling
• 구매: buying
• 교환: trading
• 미개봉: unopened
• 개봉: opened
• 앨포 / 앨범포카: album pcs
• 제시: qyop
• 포카/ 포토카드: photocard
• 공방포카 : broadcast pc

** typing the group/idol name in korean will yield more results!!