Perhaps you should try some spelling variations:
nang dau » hang dau, nang du, nang cao
thanh do » thanh pho, thanh hoa, thanh loi
xang dau » hang dau
thanh de » hanh de, thanh ve, thanh le
tu sach » thu sach, su sach, te sach
cac duc » cac du, cao duc, cac dac
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
ve cac » va cac, vien cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang dau) OR (xang dau)) hoi. hieu ve cac duc va ((thanh de) or (thanh do)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang dau) OR (xang dau)) hoi. hieu ve cac duc va ((thanh de) OR (thanh do)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y ((nang dau) OR (xang dau)) hoi. hieu ve cac duc va ((thanh de) or (thanh do)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang dau) OR (xang dau)) hoi. hieu ve cac duc va ((thanh de) or (thanh do)) cuu tre*.