Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh trang » thanh trung, canh tranh, hanh trinh
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
trang va » tran van, hang va
va thong » va thuong, va phuong, he thong
toan cao » toan ban, toan tap

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 (chinh sach)) - hanh trang va thong ((cong thanh) or (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - hanh trang va thong ((cong thanh) OR (dong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chinh sach)) - hanh trang va thong ((cong thanh) or (dong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chinh sach)) - hanh trang va thong ((cong thanh) or (dong thanh)) toan cao*.