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tai truong » thi truong, tai trung, tang truong
thieu thuc » hieu thuc, tieu thu, thien phuc
truong cao » truong dai
than thong » than thuong, toan thong, tran thong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
pho thong » he thong
khoa than » khoa luan, hoa thai, hoa tan
khoa pho » khoa phu, khoa khoa, khoa phau
sach tai » sach bai, sach tham, sach dao
cao khoa » lao khoa, bao khoa, cac khoa
so sach » so sanh, bo sach, co sach
vu sach » vu bach, su sach, vu khach