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nghien cua » nghien cuu, nghiep cua, nghiep vua
hanh thoi » hanh thuoc, nhanh thai, hanh noi
thu hanh » thuc hanh, thu thanh, thuy hanh
thoi dai » hoc dai, hoi dap, hoi dan
cua toan » cuu toan, xuan toan, cua thanh
toan hoc » van hoc, hoa hoc, tin hoc
hoc toan » hoc tan, hop toan, hoa toan
khoa hoc » hoa hoc
van nhan » van phan, van thanh, danh nhan
nhan dan » phan dau, gian dan, nhan tai
hai van » thai van, ha van, hai tan
hoc xa » hoc ma
xa hai » xa thai, xua hai, xa hoi