Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
nhung cong » dung cong, thong cong, hang cong
tang thanh » dang thanh, trung thanh, hoang thanh
cong tang » cong thang, cong tan, cong lang
thanh cau » thanh chau, thanh mau, nhanh cau
ho chieu » theo chieu, hoc thieu, doi chieu

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 trung) or (canh tranh)) va nhung cong tang thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((hanh trung) OR (canh tranh)) va nhung cong tang thanh cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((hanh trung) or (canh tranh)) va nhung cong tang thanh cau*.