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tri thuoc » tri hoc, tin thuoc
thuoc van » thuoc va, thuoc ban, thuoc tan
cho thong » cho thuong, pho thong, cho trong
sach tri » sach tai, sach tren, sach truc
van khoa » von khoa, san khoa, toan khoa
thu sach » thuat sach, thuoc sach, thu hoach
tri thuc » tri tue
thuc van » thuc vat, thuc dan, thuc va
tu sach » su sach, te sach, tu cach
khoa he » hoa he, khoa hoc, khong he
hoa cho » hoa cheo, hoa co, hoa ho
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