Perhaps you should try some spelling variations:
chiet tach » chieu sach
canh trinh » canh tranh, hanh trinh, canh tinh
hang cong » dang cong, hang nong, bang cong
van thanh » ban thanh, van tuan
ho chiet » ho chieu, ho thiet, hoc thiet
trinh va » trinh van, trinh vat, trinh ve
dan toan » van toan, dan than, manh toan
va hang » van hang, va nang, va 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 - canh trinh va hang cong ((dan toan) or (van thanh)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - canh trinh va hang cong ((dan toan) OR (van thanh)) tap.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - canh trinh va hang cong ((dan toan) or (van thanh)) tap*.