Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh thanh » canh tranh, danh thanh, anh thanh
nhung cong » dung cong, thong cong, hang cong
thanh van » thanh san, thanh toan, thanh phan
van nhung » van nhuong, va nhung, van hung
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu tinh)) - canh thanh van nhung cong ((van toan) or (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu tinh)) - canh thanh van nhung cong ((van toan) OR (van tan)) cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu tinh)) - canh thanh van nhung cong ((van toan) or (van tan)) cao*.