Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
xang xa » lang xa, mang xa, ang xa
va xanh » va danh, va hanh, va anh
xanh di » danh di, vanh dai, xanh tai
va cap » va dap, va cao, va cai
di cua » dai cua, doi cua, de cua
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: ((so sach) or (co sach)) ty xang xa hoi. hieu ((va cap) or (va cac)) nuoc va xanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ty xang xa hoi. hieu ((va cap) OR (va cac)) nuoc va xanh di cua te.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (co sach)) ty xang xa hoi. hieu ((va cap) or (va cac)) nuoc va xanh di cua te*.