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nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hang khoa » dung khoa
cong hoc » dong hoc, cong hoa, cong coc
hoc hang » hoc hanh, hoc bang, hoc tang
khoa hoc » hoa hoc
dan nhan » danh nhan, dan chan, van nhan
nhan van » nhan dan, nhan va, phan van
te sinh » ve sinh, he sinh, ke sinh
hoi dan » hoa dan, hoc dan, hoi dap
ma hoi » mai hoi, xa hoi, ma hoa
nghien thu » nghiem thuc, nghiep thuc, nghien cuu
hang khoa » dung khoa
cong hoc » dong hoc, cong hoa, cong coc
hoc hang » hoc hanh, hoc bang, hoc tang
khoa hoc » hoa hoc
dan nhan » danh nhan, dan chan, van nhan
nhan van » nhan dan, nhan va, phan van
te sinh » ve sinh, he sinh, ke sinh
hoi dan » hoa dan, hoc dan, hoi dap
ma hoi » mai hoi, xa hoi, ma hoa
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