Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
thong cong » trong cong, tong cong, thong thong
hanh bang » anh bang, hanh mang, lanh bang
va thong » va thuong, va phuong, he thong
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat
bang va » hang va, ban va, trang va

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)) - hanh bang va thong cong ((dan toan) or (dan chan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu tinh)) - hanh bang va thong cong ((dan toan) OR (dan chan)) tap.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu tinh)) - hanh bang va thong cong ((dan toan) or (dan chan)) tap*.