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 dung » phan ung, phan dang, chan dung
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van
van tap » van tai, van tan, han tap

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