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nguoi thong » nguoi muong, nguoi thanh, nguoi cong
sach tien » sach tren, sach thieu
hoa nguoi » cua nguoi, cho nguoi, con nguoi
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
sach lam » cach lam, sach tham, sach luan
lam thuc » lam thuoc, am thuc, nam thuc
khoa hoc » hoa hoc
hoc cong » hoc co, cac cong, hoc dung
tu sach » thu sach, su sach, te sach
tien tu » thien tu, tien thu, dien tu
cau hoa » cau hoi
tu cau » tu cac, cu cau, tu can