Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
thuc dan » thuc hanh, hoc dan, thuc vat
thanh de » hanh de, thanh ve, thanh do
vu sach » su sach, vu khach
xang xa » lang xa, mang xa, dang xay
hieu ve » hieu va, hieu van
ang xa » lang xa, mang xa, dang xay
de cua » le cua, te cua, dieu cua
cua te » cua tu
ve am » va am

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu bach)) ty ((xang xa) OR (ang xa)) hoi. hieu ve am thuc dan thanh de cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ty ((xang xa) OR (ang xa)) hoi. hieu ve am thuc dan thanh de cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vu bach)) ty ((xang xa) OR (ang xa)) hoi. hieu ve am thuc dan thanh de cua te".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ty ((xang xa) OR (ang xa)) hoi. hieu ve am thuc dan thanh de cua te*.