Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh doi » thanh loi, thanh moi, thanh do
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, mang xa
doi cua » dai cua, hoi cua
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
cau lo » cau do, cau o, cam lo
lo ban » co ban, lo van, ly ban
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 ky ((nang xa) or (nang ma)) hoi. ((hieu ve) or (lieu va)) cau lo ban thanh doi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang ma)) hoi. ((hieu ve) OR (lieu va)) cau lo ban thanh doi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang xa) or (nang ma)) hoi. ((hieu ve) or (lieu va)) cau lo ban thanh doi cua te*.