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bai thuyet » li thuyet, ba tuyet, bam huyet
thuyet anh » thuyet kinh, thuy anh, thuyet dan
khoi phong » khoi khong, khi phong, hai phong
pho thong » he thong
sach bai » sach dao, cac bai, sach xa
anh khoa » doanh khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
sach tai » sach tham, sach dao, sach xa
thu sinh » thu minh, thu kinh, thuoc sinh
sinh hoa » sinh hoat, sinh khoa, sinh hoc
hoa khoi » hoc khoi, hoa khoa, hoa hoi
vu sach » vu bach, su sach, vu khach
tu sach » thu sach, su sach, te sach
tai thu » thi thu, tai khu, tai thi