Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
chu sach » cau sach, chieu sach, chuc hach
thu sach » tu sach, thuat sach, thuoc sach
dan toan » van toan, dan than, manh toan
van tan » van tuan, van ban, van tai

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: cho ((chu sach) OR (thu sach)) - hanh trinh cua nhung cong ((dan toan) OR (van tan)) cau~.
• Adding a wildcard symbol may retrieve word variants: cho ((chu sach) or (thu sach)) - hanh trinh cua nhung cong ((dan toan) or (van tan)) cau*.