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danh hoc » dan hoc, danh hoa, anh hoc
huu toan » cuu toan, huy toan, hieu toan
huu tuan » huu han, huu tung
hoc toan » hoc tan, hop toan, hoa toan
khoa hoc » hoa hoc
phat dau » phan dau, pham dau, phap dau
so danh » do danh, so sanh, so dan
hoc xa » hoc ma
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