Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
dung dang » dung dan, dung dong, dung danh
dang manh » dang hanh, dang minh, duong manh
manh toan » thanh toan, anh tuan, tinh toan
qua dung » quang dung, su dung, qua song
toan tap » toan ban

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

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