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khan thong » khap thong, khau thong, nhan thong
khoa khan » kho khan, khoa kham, khoa than
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
dan khoa » dang khoa, da khoa, san khoa
te sach » toc sach
khoa he » hoa he, khoa hoc, khong he
so sach » so sanh, bo sach, co sach
tri hoc » triet hoc, thai hoc
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