Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
xuc ban » duc ban, cuc ban, quoc ban
di cua » dai cua, doi cua, de cua
va cam » va cham, va cao, va cai
_ lang » o lang, _ land
v lang » va lang, o lang, van lang
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: thuoc sach ((v lang) OR (_ lang)) xa hoi. hieu ((va cam) or (va cac)) xuc ban thanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ((v lang) OR (_ lang)) xa hoi. hieu ((va cam) OR (va cac)) xuc ban thanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ((v lang) OR (_ lang)) xa hoi. hieu ((va cam) or (va cac)) xuc ban thanh di cua te".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ((v lang) OR (_ lang)) xa hoi. hieu ((va cam) or (va cac)) xuc ban thanh di cua te*.