Perhaps you should try some spelling variations:
chiet tach » chieu sach
truong cao » truong dai
nhung cong » dung cong, thong cong, hang cong
truong ca » truong va, trong ca, truong dai
ho chiet » ho chieu, ho thiet, hoc thiet
cong tac » cong ty
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca cau

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 - thanh ((truong ca) or (truong cao)) nhung cong tac ((chan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh ((truong ca) OR (truong cao)) nhung cong tac ((chan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh ((truong ca) or (truong cao)) nhung cong tac ((chan cau) or (can cau))*.