Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
ban thanh » ban hanh, ban hang
tang cho » trang cho, sang cho, hang cho
tu sach » thu sach, su sach, te sach
cac dua » cach dua, cac qua, cac du
cuu tre » cua tre, cau tren, cau treo
dua ban » dia ban, cua ban, qua ban
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach ty
tang ho » tung ho, tang ha, tang o
ve cac » va cac, vien cac
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: tu sach tu ((tang ho) OR (tang cho)) hoi. hieu ve cac dua ban thanh tai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu ((tang ho) OR (tang cho)) hoi. hieu ve cac dua ban thanh tai ((cuu tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu ((tang ho) OR (tang cho)) hoi. hieu ve cac dua ban thanh tai ((cuu tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach tu ((tang ho) OR (tang cho)) hoi. hieu ve cac dua ban thanh tai ((cuu tre) or (cua te))*.