Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
quan nhung » qua nhung, luan chung, quang hung
cua nhung » va nhung
cua chung » luan chung, luat chung, cua cong
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » 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: ho chieu sach - hanh trinh ((((quan nhung) OR (cua nhung))) or (cua chung)) cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh ((((quan nhung) OR (cua nhung))) OR (cua chung)) cong dan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh ((((quan nhung) OR (cua nhung))) or (cua chung)) cong dan toan cau*".