Perhaps you should try some spelling variations:
thieu tach » thien hach, chiet tach, chieu sach
hanh dong » anh dong, ha dong
dong dang » duong dang, dong bang, dung dang
dang cong » dung cong
cong tran » cong tuan, cong toan, cong tren
cong tan » cong tac, cong san, cong thanh
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu tach - hanh dong dang cong ((cong tran) or (cong tan)) phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu tach - hanh dong dang cong ((cong tran) OR (cong tan)) phan lap.
• Adding a wildcard symbol may retrieve word variants: toc thieu tach - hanh dong dang cong ((cong tran) or (cong tan)) phan lap*.