Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
hoc chieu » hoc thieu, ho chieu, hoc hien
cua nhung » va nhung
cong ban » cong bang, cong san, cong tan
hang cao » hoang cao, nang cao, hang cau
hang ca » hang va, nang cao, hang tai

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 - ((hanh trang) OR (canh tranh)) cua nhung cong ban ((hang cao) or (hang ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - ((hanh trang) OR (canh tranh)) cua nhung cong ban ((hang cao) OR (hang ca)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((hanh trang) OR (canh tranh)) cua nhung cong ban ((hang cao) or (hang ca))".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh trang) OR (canh tranh)) cua nhung cong ban ((hang cao) or (hang ca))*.