Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
hieu van » thien van, lieu va, hieu ve
va thanh » gia thanh, ban thanh, va tinh
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai 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 ty xang xa hoi. ((hieu van) or (hieu va)) pham duc va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty xang xa hoi. ((hieu van) OR (hieu va)) pham duc va thanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: so sach ty xang xa hoi. ((hieu van) or (hieu va)) pham duc va thanh vai cua te*.