Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
bang ngon » tang nguon, danh ngon, dang ngoc
manh toan » thanh toan, anh tuan, tinh toan
tranh ha » thanh ha, trang ha, trinh ha
ban than » ban thanh, van thanh, ban hang
ha bang » hai bang, ha tang, va bang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (chieu xanh)) - canh tranh ha bang ngon ((manh toan) or (ban than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu xanh)) - canh tranh ha bang ngon ((manh toan) OR (ban than)) tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu xanh)) - canh tranh ha bang ngon ((manh toan) or (ban than)) tap*.