Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dang xay » dang van, van xay
thanh vi » hanh vi, thanh va, thanh ve
te sach » toc sach
xay hoi » xa hoi, tay hoi, cay phoi
duc ban » duc tan, duc van, dua ban
vi cua » vai cua, di cua
cua te » cua tu
sach v » sach va, sach y, sach 2
va cai » va dai, va cao
v dang » vu dang, va dang, 2 dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach v dang xay hoi. hieu ((((va cai) OR (va bai))) or (va cac)) duc ban thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v dang xay hoi. hieu ((((va cai) OR (va bai))) OR (va cac)) duc ban thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach v dang xay hoi. hieu ((((va cai) OR (va bai))) or (va cac)) duc ban thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: te sach v dang xay hoi. hieu ((((va cai) OR (va bai))) or (va cac)) duc ban thanh vi cua te*.