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phan thong » phan thuong, phan hong, phan tong
khoa thong » hoa thong, thoai thong, pho thong
sach tien » sach tren, sach thieu
khoa khoa » hoa khoa, khuan khoa, khoa hoc
tien hoc » tin hoc, tien hoa, dien hoc
hoa phan » hoa dan, co phan
sach tai » sach bai, sach tham, sach dao
tai thuc » thai thuc, tri thuc, dai thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan khoa » dang khoa, da khoa, san khoa
su sach » so sach, vu sach
hoc anh » hoc nganh, hoc nhanh, ngoc anh
anh hoa » anh khoa, danh hoa, hanh hoa
te sach » toc sach