Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
ban thanh » ban hanh, ban hang
vai cua » dai cua, hai cua, lai cua
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu van
sach ty » sach tu, sach thu, xach tay
duc ban » duc tan, duc van, dua ban
hieu va » lieu va, hieu qua
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) OR (sach y)) xang xa hoi. ((hieu ve) or (hieu va)) pham duc ban thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) OR (hieu va)) pham duc ban thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (hieu va)) pham duc ban thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: so ((sach ty) OR (sach y)) xang xa hoi. ((hieu ve) or (hieu va)) pham duc ban thanh vai cua te*.