Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh trang » thanh trung, canh tranh, minh trang
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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

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