Perhaps you should try some spelling variations:
thiet tach » chiet tach, thien hach, thuat tach
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thanh bac » nhanh bac, thanh bai, thanh san
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
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 tach - anh huong ((cua dung) or (cua dang)) cong tan ((than ban) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - anh huong ((cua dung) OR (cua dang)) cong tan ((than ban) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - anh huong ((cua dung) or (cua dang)) cong tan ((than ban) or (thanh bac))*.