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sinh khoa » sinh hoc, sinh hoat, anh khoa
hoc thong » hoc thuong, hoc trong, hoc hong
phuc hang » phuc thanh, phuc khanh, phuc khong
hang khoa » dung khoa
pho thong » he thong
sach tri » sach tai, sach tren, sach truc
khoa hoc » hoa hoc
bai phuc » ban phuc, bai thuoc, bai hoc
khoa pho » khoa phu, khoa khoa, khoa phau
tri hoc » triet hoc, tri thuc, thai hoc
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