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khoa thong » hoa thong, thoai thong, pho thong
thai thuc » thai thuy, thai tuc, tham thuc
thuc cach » thuoc sach, truoc cach, thuc hanh
cach hoan » cac khoan, hach toan, sach han
tan thong » toan thong, tran thong, tao thong
khoa khoa » hoa khoa, khuan khoa, khoa hoc
can thai » can thi, ca thai, ban thai
hoan tan » hoan tran, hoa tan, hoan thanh
sach tri » sach tai, sach tren, sach truc
anh khoa » doanh khoa, hang khoa
tu sach » thu sach, su sach, te sach
tue anh » tu anh, tuyet anh, tuan anh
tu can » tu ban, tu cac, thu canh