Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
so sach » so sanh, bo sach, co sach
dao duc » giao duc, tao duoc
ly vang » ly hang, ly van, ly quang
vang xa » lang xa, mang xa, ang xa
hieu ve » hieu van
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
sach ly » sach y, sach lo, sach ty
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 ly vang xa hoi. ((hieu ve) OR (hieu va)) ((cam xuc) or (dao duc)) van thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly vang xa hoi. ((hieu ve) OR (hieu va)) ((cam xuc) OR (dao duc)) van thanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ly vang xa hoi. ((hieu ve) OR (hieu va)) ((cam xuc) or (dao duc)) van thanh vai cua te*".