Perhaps you should try some spelling variations:
luong thanh » muong thanh, truong thanh, dong thanh
chieu sach » chiet tach, chieu sang, chieu xanh
quan nhung » qua nhung, cua nhung, quang hung
luan chung » luan chinh
thanh phan » thanh pho, thanh san, thanh toan
anh tang » anh bang, anh dang, anh nang
phan ban » phan banh, phan van, phan ba

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chinh sach)) - anh tang ((quan nhung) OR (luan chung)) luong thanh phan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chinh sach)) - anh tang ((quan nhung) OR (luan chung)) luong thanh phan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chinh sach)) - anh tang ((quan nhung) OR (luan chung)) luong thanh phan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chinh sach)) - anh tang ((quan nhung) OR (luan chung)) luong thanh phan ban*.