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khoa thong » hoa thong, thoai thong, pho thong
tai thuoc » tri thuoc, bai thuoc, tac thuoc
thuoc anh » thuoc thanh, thuoc dang, thuoc sach
khoa khoa » hoa khoa, khuan khoa, hoc khoa
thuc dang » thuoc dang, thuc dan, thuc dung
dang khoa » dung khoa, hang khoa, dang khoi
hoc thong » hoc thuong, hoc trong, hoc hong
thu sach » tu sach, thuat sach, thuoc sach
sach tai » sach bai, sach tham, sach dao
anh khoa » doanh khoa, hang khoa
sach tri » sach tren, sach truc, sach bai
tri thuc » tri tue
khoa hoc » hoa hoc