Perhaps you should try some spelling variations:
thiet hach » thien hach, thuyet hach, thiet hai
chinh tuan » chinh luan, chinh ngan, chinh tai
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet hach - hanh chinh tuan dung cong tan than ban~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - hanh chinh tuan dung cong tan than ban*.