Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trinh » canh tranh, hanh chinh
quan nhung » cua nhung, luan chung, quang hung
qua nhung » cua nhung, qua chung, chua nhung
cong manh » cong danh, duong manh, cong thanh
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
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: ho chieu sach - hanh trinh ((quan nhung) OR (qua nhung)) ((cong manh) or (cong tan)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh trinh ((quan nhung) OR (qua nhung)) ((cong manh) OR (cong tan)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh trinh ((quan nhung) OR (qua nhung)) ((cong manh) or (cong tan)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh trinh ((quan nhung) OR (qua nhung)) ((cong manh) or (cong tan)) toan tap*.