Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
manh toan » thanh toan, tinh toan
ho chiet » ho chieu, ho thiet, hoc thiet
dan than » dan chan, ban than, van than

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 tranh van nhung cong ((dan than) or (((manh toan) or (anh tuan)))) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - canh tranh van nhung cong ((dan than) OR (((manh toan) OR (anh tuan)))) tap.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - canh tranh van nhung cong ((dan than) or (((manh toan) or (anh tuan)))) tap*.