Perhaps you should try some spelling variations:
chiet tach » chieu sach
thanh tung » thanh cong
ho chiet » ho chieu, ho thiet, hoc thiet
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap
va hang » van hang, va nang, va hanh
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - ((hanh chinh) or (thanh tung)) ((va hang) OR (va lang)) cong tac than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - ((hanh chinh) OR (thanh tung)) ((va hang) OR (va lang)) cong tac than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chiet tach - ((hanh chinh) or (thanh tung)) ((va hang) OR (va lang)) cong tac than cao".
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - ((hanh chinh) or (thanh tung)) ((va hang) OR (va lang)) cong tac than cao*.