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khoa thong » hoa thong, thoai thong, pho thong
sach tham » sach nha
phan tong » phan trong, phan cong, han tong
sach bai » sach dao, cac bai, sach xa
tue cach » tu cach, thuc cach, ve cach
cach hoa » cach hoan, cach hoc, bach hoa
hoa phan » hoa dan, co phan
tham hoc » thai hoc, tham hoa, than hoc
hoc nang » hoc bang, hoc tang, hoc hang
nang noi » nang doc
noi khoa » ngoai khoa, hoc khoa, tai khoa
so sach » so sanh, bo sach, co sach
bai tue » bai tu
tu sach » thu sach, su sach, te sach