Perhaps you should try some spelling variations:
luong thanh » muong thanh, truong thanh, dong thanh
quan nhung » qua nhung, cua nhung, quang hung
luan chung » luan chinh
hanh nang » anh nang, ganh nang, hanh mang
thanh van » thanh san, thanh toan, thanh phan
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: ((theo tieu) or (ho chieu)) sach - hanh nang ((quan nhung) OR (luan chung)) luong thanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (ho chieu)) sach - hanh nang ((quan nhung) OR (luan chung)) luong thanh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (ho chieu)) sach - hanh nang ((quan nhung) OR (luan chung)) luong thanh van ban".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (ho chieu)) sach - hanh nang ((quan nhung) OR (luan chung)) luong thanh van ban*.