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dich hoc » sinh hoc, hinh hoc, tinh hoc
cuu dong » cuu cong, cuu tong, cuu long
dong hoc » dong co, dong luc
san khoa » toan khoa, hang khoa, da khoa
khoa hoc » hoa hoc
tu dich » te dich, chu dich, hut dich
hoc san » hoc dan, toc san, hoc can
phat va » chat va, pham va, phat vi
phap va » phap vat, pham va, pham van
hoc xa » hoc ma
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