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thuc doanh » thuc hanh, thuc dan, chuc danh
doanh khoa » toan khoa
lich thai » sinh thai, tinh thai, hinh thai
thai thuc » thai thuy, thai tuc, tham thuc
sach tren » sach tien, sach tranh
tren thuc » trien thuc, tron thuc, trinh thuc
thuc cach » thuoc sach, truoc cach, thuc hanh
cach cong » cac cong, cach con, khach cong
hoa thong » hoa trong, hoa khong, hoa thon
toc sach » hoc sach, doc sach, thuoc sach
cong hoa » dong hoa, dong hoc, hang hoa
tu lich » du lich, cuu lich
khoa he » hoa he, khoa hoc, khong he