Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
song van » hoang van, trong van, duong van
van tan » van tuan, van ban, van tai
tan tap » toan tap, han tap, tan tat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) OR (chiet tach)) - hanh tranh ((cua tong) or (cua dong)) song van tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chiet tach)) - hanh tranh ((cua tong) OR (cua dong)) song van tan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) OR (chiet tach)) - hanh tranh ((cua tong) or (cua dong)) song van tan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) OR (chiet tach)) - hanh tranh ((cua tong) or (cua dong)) song van tan tap*.