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phu thong » pho thong, phap thong, khau thong
cach khoa » bach khoa, cac khoa, cac khoan
sach tai » sach bai, sach tham, sach dao
thuc dan » thuc hanh, thuc vat
khoa phu » khoa phau, khoa thu, hoa phu
sach tri » sach tren, sach truc, sach bai
su sach » so sach, vu sach
khoa he » hoa he, khoa hoc, khong he
te sach » toc sach
tu cach » tu cac
tri tu » tri tue, troi tu, tai tu
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