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thoai thong » thoai trong, thong thong, toan thong
thuc thanh » thuoc thanh, thuc hanh, phuc thanh
thanh khoa » thanh hoa, thanh pho, hang khoa
nha thoai » than thoai, nha khoa, nha tai
hoi khong » khoi khong, hoa khong, noi khong
sach tai » sach bai, sach tham, sach dao
tai thuc » thai thuc, tri thuc, dai thuc
khoa hoi » khoan hoi, khoa hoc, khoa doi
vu sach » vu bach, su sach, vu khach
tai hoc » thai hoc, dai hoc, bai hoc
hoc cac » hoc cao
tu sach » thu sach, su sach, te sach