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thieuc thuc » thuc thuc, hieu thuc
thoai trong » thoai thong, ngoai trong, tai trong
khoa thoai » hoa thai, hoi thoai, khoa than
thieu tuc » hieu tuc, thu tuc, thien tu
hanh khoa » hang khoa, anh khoa, hanh hoa
pho thong » he thong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
tuc hanh » thuc hanh, tuc thanh, duc hanh
khoa pho » khoa phu, khoa khoa, khoa phau
so sach » so sanh, bo sach, co sach
te sach » toc sach