Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
su sach » so sach, vu sach
cam duc » cam xuc, cao duc, pham duc
vai cua » dai cua, hai cua, lai cua
sach ly » sach y, sach lo, sach ty
hieu ve » hieu va, hieu van
vang xa » lang xa, mang xa, ang xa
ly vang » ly hang, ly van, ly quang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ly vang xa hoi. ((hieu ve) or (hieu qua)) ((cam duc) or (giao duc)) ban thanh vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ly vang xa hoi. ((hieu ve) OR (hieu qua)) ((cam duc) OR (giao duc)) ban thanh vai cua tu.
• Adding a wildcard symbol may retrieve word variants: su sach ly vang xa hoi. ((hieu ve) or (hieu qua)) ((cam duc) or (giao duc)) ban thanh vai cua tu*.