Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
ho chieu » theo chieu, hoc thieu, doi chieu
van than » van thanh, van thang, van phan
van tuan » van quan, van ban, anh tuan

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 tieu) OR (ho chieu)) sach - hanh trinh quan nhung cong ((van than) OR (van tuan)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (ho chieu)) sach - hanh trinh quan nhung cong ((van than) OR (van tuan)) cao~".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) sach - hanh trinh quan nhung cong ((van than) OR (van tuan)) cao*.