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thuc thanh » thuoc thanh, thuc hanh, phuc thanh
thanh khoa » thanh hoa, thanh pho, hang khoa
khoa thong » thoai thong, pho thong, khoi khong
khoa khoa » hoa khoa, khuan khoa, khoa hoc
bach khoa » anh khoa
hoa thong » hoa trong, hoa khong, hoa thon
sach tai » sach bai, sach tham, sach xa
tai thuc » thai thuc, tri thuc, dai thuc
sach dao » lanh dao
khoa hoa » khoa hoc, khoa hoi, kha hoa
su sach » so sach, vu sach
tu bach » vu bach, tu cach, tu bac
dao tu » dao tuc, dao tru, tao tu