Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
truong va » truong dai, truong cao, truong dao
manh toan » thanh toan, anh tuan, tinh toan
ho chiet » ho chieu, ho thiet, hoc thiet
trung va » trang va, trung ha, trung tam
dan toan » van toan, dan than, xuan toan

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