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nghien cua » nghien cuu, nghiep cua, nghiep vua
cach thoi » cac thoi, cach thuc, cach noi
thong hoc » thuong hoc, tuong hoc, thong hoa
khong hoc » khung hoc, khong thuoc, khong chuc
hoc nganh » hoc nhanh
van nhan » van phan, van thanh, danh nhan
nhan tai » hang tai, van tai, toan tai
toan hoc » toan khoa, van hoc, hoa hoc
cua toan » cuu toan, xuan toan, cua thanh
thoi tap » toi tap, hoc tap, thoi dai
hoi van » hoi va, hoi dan, hai van
tu cach » tu cac