Perhaps you should try some spelling variations:
bo sach » co sach, hoc sach
vai cua » dai cua, hai cua, lai cua
dao vai » dao van, dao va, dao bai
cay tuc » cay thuc, cay thuoc, chay tui
mang xa » lang xa, dang xay, mang cua
so sanh » do sanh
va cay » va cac, va cao, va cai
tuc va » thuc va, truc va, tuc xa
va dao » ca dao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((bo sach) or (so sanh)) ty ((mang xa) OR (mang may)) hoi. lieu va cay tuc va dao vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((bo sach) OR (so sanh)) ty ((mang xa) OR (mang may)) hoi. lieu va cay tuc va dao vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((bo sach) or (so sanh)) ty ((mang xa) OR (mang may)) hoi. lieu va cay tuc va dao vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((bo sach) or (so sanh)) ty ((mang xa) OR (mang may)) hoi. lieu va cay tuc va dao vai cua te*.