Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu xanh » chieu sang, chieu tinh, hieu manh
nguoi san » nguoi tay, nguoi dao, nguoi ma
kho tang » cao tang
san toan » van toan, dan toan, manh toan
toan tap » toan ban
ha tang » phap tang, cao tang, ha giang

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 tang) or (kho tang)) nguoi san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chieu xanh)) - canh tranh ((ha tang) OR (kho tang)) nguoi san toan tap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chieu xanh)) - canh tranh ((ha tang) or (kho tang)) nguoi san toan tap*.