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thuoc manh » thuoc thanh, thuoc ma, thuoc ban
khoa thong » thoai thong, pho thong, khoi khong
tri thuoc » tri hoc, tin thuoc
manh toan » thanh toan, anh tuan, tinh toan
hoa thong » hoa trong, hoa khong, hoa thon
thu sach » tu sach, thuat sach, thuoc sach
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
hanh hoa » thanh hoa, khanh hoa, hang hoa
hoa khoa » khoa khoa, chua khoa, chia khoa
toan hoa » toan khoa, toan hoat, toan hoc
su sach » so sach, vu sach