Perhaps you should try some spelling variations:
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hanh dung » thanh dung, anh dung, hanh dong
dung phan » dung nhan, dung luan, dung ha
phan dang » phan dau, phan cong, nhan dan
dang cong » dung cong
cong tan » cong tac, cong san, cong thanh
tan han » tan nhan, tran han, tan van
han tap » han tai, toan tap, nhan tai

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) or (toc thieu)) tach - hanh dung phan dang cong tan han tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thiet) OR (toc thieu)) tach - hanh dung phan dang cong tan han tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thiet) or (toc thieu)) tach - hanh dung phan dang cong tan han tap*.