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khong quan » thong quan, hong quan, thong quang
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dung quan » dung quang, dung luan, luong quan
hieu soat » hieu suat, hieu luat, kiem soat
hieu hoat » hieu hoa, thien hoat, hieu luat
kien soat » kiem soat, bien soan, kien hoa
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van kien » van tien, van hien, van chien
quan vi » quan li, quan tri, quan doi
1
by Klaus, Krickeberg
Published 2014
Specialized reference book
2
by Knoepfler, Paul
Published 2019
Book